Knob proximity seems to be an issue, but I guess you can't have both compact and easy to noodle. I think I need to build one. Definitely need room either side of the knobs.

Actually, if the designer there would've just staggered the knobs to the left and right, you WOULD have ample room for fingers. Too much attention paid to electronics and NOT ergonomics is how you get unplayable modules. For example, my AE system uses those little marked-shaft pots, but they were designed with ample space so that you can get into through the patchcord (actually pinwires in the AE) snarl and the other controls around.

I have pretty big hands and have no issue tweaking the knobs. Just gotta place it in a sensible place in your rack where it isn’t up against other modules knobs. Anyway, fantastic sounding filter that screams in resonance. Super happy with it.