I've actually got one of those awaiting a new nut as well as a JSB. It's going to sound and especially play a bit different than all the other humbucker basses, since it uses guitar pickups rather than bass ones. This means everything on the BXB and JSB is going to be scaled down a little. Be aware of that before you buy. The string spacing is going to be tighter, and they're 32 1/4 scale; they may be a little tight if you're used to playing on a wide fretboard. That said, I kinda of want to try putting an EMG 85/81 combo in one just to try.
a long time ago, I owned an early 80s Carvin LB60 that had guitar pickups...It was thinner, of course, but sounded decent enough...Ive always been a "flat-as-possible-EQ/let-volume/power-fill-the-space" player so just some moderate boosting of EQ was the perfect fix for me...Thanks for the headsup: I am actively searching for a BXB