Hi Brock. It seems we share other device tastes.
I see my confusion now.
Using these two resources, the quick guide sheet:
https://com-eventide-drupaluserfiles.s3.amazonaws.com/download/file/Rose-QRG-Rv21.pdf
..and the midi implementation chart:
..it was not clear that a separate midi expression assigned to the external expression pedal function even existed. I had to find a video implying that such existed, after your comment here implied it existed. That entirely answers my initial concern of having to choose between expression, or trs midi without expression.
My second paragraph suggestion remains relevant, which rephrased, is to replace one set of CC patch values with two sets of CC patch values to preserve the AB morphing function even while changing parameters via midi.
Thanks.
