I decided to post this as a new one since any other thread is so old resurrecting it would result in a zombie apocalypse.
I just strung my Hohner B2A with a set of Status double-ball ground-wound strings (a 45-65-85-105 set) after reading so much about how a proper Steinberger clone needs ground-wounds for it to sound properly. I was skeptical - I had tried flats ones and didn't quite like the feel, and I had no groundwounds to try our anywhere prior to everything.
They were right, though - the groundwounds are positively growling on this bass (loaded with proper active EMG-HBs, not Selects) and as far as first impressions of the look, sound and feel go, I'd say the strings are well worth the money.

They feel smooth under the fingers, but not distractingly so, and the tone is insanely good.