the idea of SENDING midi on ‘OMNI’ is a little unusual. That is usually a recieve thing, I think.
That said, It would be trivial for one to make a custom MIDI expression pedal that sends multiple channels of CC data, so it can certainly be done. It is pretty niche, though. I doubt any of the majors would do it.
I might try and breadboard this out. You could probably make it for, like, $25.
