Well, I tried the experiment, plugging my Verithin into the Fender Bassman Export 50 into the HH folded horn 2x15. Sitting close by, with the volume of the amp at 9 o'clock, I can play, but only have to lean forward to get controllable feedback, mostly from the 'A' anywhere on the neck. I had plugged in through my Boss Fender Deluxe pedal, which has level and gain controls. Setting the level to match dry/wet, once I start upping the gain, it becomes pretty much uncontrollable. The 'A's, obviously, but just about everywhere on the neck sets off deep, unmusical feedback. I couldn't get any gain setting which brought overdrive of any kind, as it would start howling and honking first. I couldn't play even a basic riff with that racket going on. I also have a germanium twin Big Muff, but a didn't dare to plug into that, as it has gain and distortion in spades, even with my guitars, so...
This is not a comparison with the Casady bass, of course, but I can now state that which I hitherto didn't know : my semi-acoustic bass doesn't take well, at all, to 'drive'. I don't know if this helps, but at least I've learned something today.