Groovy. Don't forget to make those medium scale D'Addarios; the bass is short scale, but the distance between the tailpiece and bridge adds a few inches to the winding length needed. Rounds on a violin bass is a cool sound, too, though. To set intonation, the little saddles in the bridge can be moved to different slots, and the bridge can be angled. Pretty spot-on intonation is possible; it's just a bit tedious getting there.
As for the controls, they're arcane but simple. Each pickup has a volume control; the best blending happens when you dial the dominant pickup back to about 7 or 8.
The switches are as follows: Solo is full volume output; Rhythm drops the output volume to 70%. Bass On switches in a treble cut capacitor for a dark and dubby neck pickup tone; it also takes the bridge pickup out of the circuit; the up position is a bright neck pickup sound which can be blended with the bridge pickup. Treble On switches in a bass cut capacitor for a very bright bridge pickup sound (mainly useful for tic-tac tones, harmonics, or AM radio impersonations); it also takes the neck pickup out of the circuit; the up position is the slightly less bright bridge pickup sound which can be blended with the neck pickup.
I think the best/most useful tones are bright neck pickup (with or without some bridge pickup blended in) and Bass On. It's not a huge palette, but there are several good tones there, suitable for a variety of situations.
Enjoy!
Your review makes me want one of these!

. So, don't be upset if you try some strings that it doesn't like. Just try something else. And, yeah; I play the thing with a pick. Just seems to work better...