I have a Model C which of course has both bridge wing and fingerboard pickups, in my case with a stereo TRS plug (feeding into a mounted K&K Dual Channel Pro ST blending pre-amp). Vic's Model A is just the fingerboard pickup, the Model B is just the bridge wing pickup, both which provide mono-outputs and usually do not absolutely require a pre-amp
by themselves. Vic's pickups have dual piezo surfaces, so their output tends to be pretty strong.
The Model C might be able to get by without a pre-amp except for the need to control the volume blend between the two pickups, although impedance matching is also a very important feature of pre-amps. So even if you have a multi-channel amp, a pre-amp or at least inline impedance matching transformers of some kind may be required. In my experience if you plug in the pickups directly into your amp and the volume is too low, you most likely at least need something for impedance matching.
I have no experience with Vic's D and E models. Seeing how volume blending works with the Model C and a dual-channel pre-amp, I'm a little mystified about what kind of blending would be needed with these models and what pre-amps would be required.
I play around with RaB, but it isn't where I spend most of my time. While I do slap a lot, most of my playing is with more volume sensitive roots genre. And, my DB is a hot-rodded Alcoa; even though extreme measures have been taken to tame down the natural metallic tone of this instrument, its tone and acoustics are to at least some extent going to always be different from a wooden DB. That said, my experience with Vic's pickups has been totally positive and I can comfortably recommend them very highly.
There is, however, a significant difference in tone between piezo-pickups and mics, and since your DB is a hybrid I'd guess that you're going to be at least a little sensitive to that. I've also got a mounted Sennheiser e604 dynamic mic on my DB, providing a clear mic feed directly to my amp or to FOH for those more subtle, volume sensitive situations, and have really valued using it on stage a lot since getting it. It is a completely separate feed, so I can use it alone or at the same time as my Vic's/K&K system. Anyway, it's just a thought in case you're interested.
My band's most recent album (2019, Grace for the Journey) was recorded with my Alcoa using a Vic's system feeding directly into the studio system. If you'd like to hear how it sounds, there's a link to one of this album's songs ( Hear my Alcoa in action

. "I Am A Pilgrim" ) in my signature line. (I primarily play banjo with this band, our bassist prefers to play my Alcoa.)
Good luck with your decision making!