Volume off = not noodling.Yes.
I turn my volume knob all the way down and I tend to run through scales on my instrument and finger warmups. I do this in rehearsal as well. I noodle while listening to my band mates or holding a conversation - I'm not head-in-the-fretboard, checked out or not talking or participating; it's almost just something to do with my hands. It's generally not obnoxious (no volume, and I don't slap so it's not super clacky) but I suppose I could probably do it less.
