You know, I used to think that fanned frets on a four string were fairly pointless. Maybe it isn't strictly necessary, but Dingwall makes some really nice basses. I may do a NBD thread later, but for now, here's a quick comparison between my Super P and my D-Roc.
The Super P is definitely a P bass. My favorite pickup combination is P only, and it sounds like a P. The pickup is at the more "mellow" end of the spectrum. The bass hangs comfortably on a strap, and the medium scale is perfect for me. Fit and finish are flawless, which is a trait both my Canadian basses have in common.
The D-Roc is completely different. Tone-wise, it is more aggressive, but I wouldn't say it sounds like a Thunderbird at all. It doesn't have the super-thick low end and muted top end that all my other 'birds have. The pickup selector and pickup placement is well designed; rotating the knob clockwise takes you from a thinner, cleaner sound to a thicker, fatter tone. If the switch had a couple more positions, the tone progression would get into 'bird territory. For me, it saves me all the thinning out and cleaning up of EQ that I do when I use a Thunderbird. This bass has a BIG low end, especially for a passive bass. It is humbucker-esque, with maybe a better top end.
The D-Roc is a player. The setup was spot-on right out of the box. The nut feels wider than the Super P, but I think that is because this neck is a little thinner than the fairly chunky P neck. I definitely notice the difference in scale length, especially when I play the low F.
The bass hangs on a strap perfectly, but that solution presents another problem. The neck joint interferes with upper fret access a little - it joins the body at the 14th fret as opposed to the 16th or 17th fret on the Super P. With a strap attached, this is more noticeable. Also noticeable is 20 frets as opposed to 22 on the Super P. None of this upper fret access matters much to me, but I suspect Sheldon will tweak that neck joint at some point in the future; I can't imagine he is completely happy with it yet.
Fit and finish is excellent, but falls a little short of my Canadian basses. For example, the finish in the recessed jack cavity isn't perfect. I was also a little surprised to see that the rear control cavity cover isn't recessed. The bass is super light - I can't weigh it super-accurately, but I put the D-roc at about 7.6lbs and the Super P at 8.8lbs. My bass is matte black and has a black vinyl pickguard. It is beautiful, but I wonder how durable the finish is. I also miss the Canadian Dingwall knobs.
Both basses are exceptional. I give the edge, due to personal preference, to the Super P, but the D-Roc is killer. The D-Roc is as aggressive sounding as it looks - I can't wait to use it with the rock band, some overdrive, and some really heavy-handed pick playing. I can already see that it will love that kind of abuse.