Well, so finally, and before the Oram release, i decided that fine-parameter adjustment should be implemented for all interfaces, so it’s 
- V5 & MINI_V2: ALT mode or Push+Rotate knob
- V1 to V4 (“classic” wiring layouts): Push+Rotate knob
- TOUCH: Horizontal drag on the controller widget
I’m quite happy with the push+rotate implementation as i got it working without interfering the normal push/release behavior. After pushing, you must start rotating before 2 seconds and the release will be ignored. Easy and it really works!