Thanks guys !!
The thing about the case is just how well the Sei fits in it. Just a standard Hiscox Lifelite case but it fits like a glove !!
The little wooden thingy next to the outputs is a coil tap button which switches the humbucker from series to parallel. This cool little gadget first appeared on Matthew's fretted 7 and was so cool I had to have it as well

I have no idea how/where Matthew got the idea from though (please tell !!)

The button is topped with it's own little piece of wood to help it blend in and look very James Bond-esque
OK, a bit of a review.
Looks:
Everytime I open the case, this bass just slays me

It's just a grin-making machine

Everything about the look is
exactly what I had in mind. The lacewood is amazing and the super-deep finish makes it look the proverbial milion bucks. Looking a little closer, the veneer is a clever touch running around the perimeter of the facings on the body and the headstock. The gold hardware gleams against the grain of the lacewood and was definately the best choice of colour for the metal parts.
The ultra-high quality birds-eye maple board is left to speak for itself, only interrupted by the laser etched mother-of-pearl block at the 12th fret which carries my signature. There's hardly a blank piece of maple on the board, just figuring all the way from top to bottom. Small circular windows act as side dots but hide the wonder of violet LED's for dark stages (or just to be flash

). The side of the body shows the core of the body sandwich, walnut, which also has a wonderful grain.
The back of the bass is as stunning as the front. Again the uber-shiny lacewood just looks superb. I asked for the full facings on the reverse and not just the wings (I just prefer it that way !!). The motorway of a neck is divided into maple and wenge lanes. The maple has some nice flaming to it, whilst the wenge has a beautiful chocolate stripy figure. These laminates disappear under the facings at either end of the bass emerging again at it's extremeties to be wonderfully shaped into the Sei outline.
Feels:
The bass is an absolute joy to play. The neck has a very gentle profile to it and is finished in a varnished, but not sticky, way. The depth of the neck is quite thin but still feels very solid. Getting up and down the neck is a breeze and I don't miss the lack of dots on the neck at all. I bought a nice, new black strap for Jezebel and have fitted the fiddly Schaller straplocks. Needless to say, it balances perfectly even with 7 machineheads trying their best to cause a case of neck dive. The string spacing is the same as my Conklin GT7, so no problems there and I'm more than impressed with the DR strings which I'd never tried before. The 24 regular frets are quite flat and are definately smaller in both width and height than those on my other basses. This is a nice change, however.
The volume control is positioned in the regular Sei position, facilitating the addition of a pre-amp if I ever want one. The pot pulls up solidly and makes a nice click as it turns on the LED's on the side of the fingerboard.
On the lower edge are the 2 outputs and the coil-tap button. The regular jack is further into the body than I expected, but this makes it easier to find before plugging a lead in.
Sounds: Full, rich, punchy that's the words which typify the tone. I play mostly rock stuff, but I want a solid tone which I can control by touch to get dynamic range. My Sei speaks how I want it to, when I want it to. Pushing the coil-tap button thins the tone a little, just giving a different flavour to the sound. For the most part though, I keep the humbucker in series mode and change hand-position to change the tone.
Some might say that it makes my Sei a bit of a one-trick-pony and to be honest it is....and that's what I wanted. I have basses with 3 band eq, but I never use them, even the pickup-pan remains in the middle

But that's the great thing about ordering a Sei, you can specify exactly what you want, and after discussing the spec with Martin, I got what I needed as well.
Conclusion: I'm trying to make this a balanced review, but it's
my bass which makes it a little difficult.
The cons: Well, the bass was delivered 2-3 months late, but that was out of the hands of Sei HQ and even now, for some, the waiting goes on. After talking to Martin though, I know that that particular set of affairs will
not happen again. I'm a very patient person and I knew that Martin would not keep me waiting longer than I had to.
I've had 2
very, very small problems since I got my Sei home.
(1) I have one high fret which only affects 1 note on the high F string.
(2) The coil tap button pushed into the control cavity, but that has been easily fixed....
I'm due to take Jezebel to back to Sei HQ in a couple of months to see how she's settling in

Like all the other Seis, she'll get the once over and anything that needs attention will be quickly rectified.
The pros: I wanted a Sei for 12 years and was very proud and excited just to have an order in

Going over the spec with Martin was a masterclass in being focussed on what you need and not just having every bell and whistle just because you can afford it.

My Sei is a testament to that process with ideas coming from both sides and other Seis
I am just so pleased with my Sei and the whole experience of having a custom instrument built. A Sei is also fantastic value for money. I've been a lucky bassist in that I've played most of the big hitters (Sadowsky, Fodera et al) and I would have my Sei above any other. Would I have another...yes, of course (if I could afford it !!). Would I recommend a Sei bass to someone looking for a new custom bass
absolutely !!