Strung it up last night and played the heck out of it. I'm very happy. The tone is great - it's very clear, probably clearer than any of my conventional basses. I was a little worried it might come off as muddy but that's definitely not the case. There's enough of the upright-esque thumpy-punch. You can get really sharp attack if you want and avoid the mid-heavy mwah (which I don't like, despite how popular it seems for fretless players).
The electronics are usable. The condenser mic really doesn't pick up any musical tone, it doesn't seem sensitive enough. But rolling it on and off does change the character and helps with attack. It's almost like a "tone control" for attack, string noise, and other non-tone characteristics.
The piezo has a volume and a tone control - the tone almost seems to be a "mid high" band, it's low enough that it's not just scraping off the highest treble. It really changes the character. With the tone all the way on, it gains a lot of brightness. Tone rolled off, it's very dark.
It's definitely louder than a solid body when unplugged. After stringing it, I was sitting in a room of quietly chatting people and I could hear the bass over the chatter but it wasn't loud enough to be disturbing anyone. This is a nice feature, it means I can "practice" while hanging out with the family or whatever, and not need an amp.
I may try to record it some time but I'm not set up to record at home right now.
I took some photos:
The soft maple on the back really "woke up" under the finish, it looks great:
The figure in the walnut is a little hard to capture, it looks really "active" in person but doesn't photograph well.
And the rays in the quartered cherry lamination in the neck blank matched up really well with the rays in the quartered maple, it almost looks like one set of rays across the various pieces:
All this talk about figure, I can't forget the fingerboard:
And here's one showing how the thumbwheels for the controls turned out:
I can't believe it's finally done! I put a strap on it, and now it can officially move out of the workshop and on to the rack of players next to my amp.
It didn't change tuning at all over night, so I'm pretty confident that the butterfly-tenon-tailpiece-thing is holding solidly and not shifting at all. I fiddled with the nut for a while to set the action and I think it's pretty much done, the saddle turned out pretty much perfect on the first try so no adjustments needed there.
I may make a small paper label to glue in the soundhole like people do on acoustic guitars, but otherwise this thing is DONE!