Good question. From what I've heard, those SVT-100's were pretty good bass amps. But they were slightly modded V5's, which weren't real well received for guitar, whereas a lot of folks loved the V4 for guitar. So that makes me think they've got to be pretty different.
I ask because I have a V5 that sounds all right, but I like my Boogies (both found here) better. TB classifieds ftw!