There are some modal controls for secondary functions, like the aptly-named MFRS (multi-function rotary switch) but by and large they are single purpose as you

There are some modal controls for secondary functions, like the aptly-named MFRS (multi-function rotary switch) but by and large they are single purpose as you pointed out. In terms of UI takeaways, I noticed that they did a pretty good job of laying out functionally-opposite buttons symmetrically on each side of the wheel, so your if your right thumb hits param+ then your left thumb will hit param-, to mistake-proof operations and emphasize muscle memory while reducing cognitive load. Also the nominal positions of the rotary switches are consistently colored white, for similar reasons.