Thanks, Simon, I have indeed learned a lot! I was definitely going for the '60's vibe. I called it Anachronistic because it's "out of time." Got a lot of old style parts and ideas that have generally not all found their way into the same bass.
It's a really unique kit that I haven't seen anywhere else, and Adam is to be commended for commissioning it. But I also see why no company has built one quite like it. Most semi-hollows are short-scale. This allows the bridge to be closer to neck and gives more room for a conventional tailpiece. I see why Gibson designed stop tailpieces and thee-points, but the forces working to pull their pins out are more extreme a curved top than on a EB or Thunderbird. So, short tailpiece, two point bridge seem like the way to go.
Pickups were dictated by what would fit in the humbucker routs. They needed to be wide enough for bass spacing. They needed to shift a little south because of the neck pocket being a little off. Preferably they'd be narrow and rounded at the end. Not many pickups fit that configuration ;-)
So, how does it sound? Good! I'll see if I can make a decent recording of it and put the samples up. Nothing Gibson about the way it sounds. Nothing vaguely muddy. Not exactly Fender sounding either. It sounds best with both pickups on. Not as scooped as a Jazz. It has some booty, but more treble than a Precision.
To get it the way I want, I need to bleed off quite a bit of the top end, and turn off the tweeters on my cab. When I do that, I really like the way it sounds. Not sure whether I'll ever use either of the single-pup settings. You lose quite a bit of gain and it seems to get thinner sounding as well. I now understand why the volume pots are 100K. Even with alnico magnets the lipsticks have plenty of top end.
Not sure how the pickup placement was determined, but it seems to work well for these pups. The neck pickup is just about where a p-bass pickup would be. The bridge pickup a lot farther from the bridge than a it would be on a jazz. I don't hear much scoop, or big boost in treble with both pickups on, and that may be why.
I wanted something a bit different, and it certainly is that, and in a good way. As the strings wear in, I hope it will get even better.