I saw a cool little box called a "cough drop" (I think) that was a momentary OFF button for the signal. Great idea, but I'm not a candidate either - I'm too mic intensive with that proximity effect, and I never liked the aerobics instructor look. The teeny-weeny ones we use for our actors on stage are very unobtrusive, but they're all omni-directional and would be terrible in my stage setting.