A comment on YouTube, in case it is relevant here:
https://www.youtube.com/watch?v=yCcwlCKqCPk
VCV does CV > Midi. So anything you can pass into VCV from Bitwig (from The Grid or wherever) can be converted to Midi. I think the main limit right now is that Bitwig will only pass 4 audio channels into a VST (Main stereo input and sidechain input). It would great if the allowed full multi-channel audio input to VCV.
The VST limitation is mentioned here: Routing more than 4 Channels of Audio to Plugins