Well, I guess I'm one of the unlucky ones . I tried with a teammate again this weekend. We play with it for over an hour and just couldn't get it to sound clear enough for me or my teammate. We know it must be our throat dynamics, as it does work on one of my teammates, but unfortunately, he has one of his own. Needless to say, if anyone's interest in one, just PM me. I have one that's never been used in the field. Bummer, I was really looking forward to using it. So for now, I've modified a boom mic to have a remote PTT.
Yeah, my team is not having much luck either. One guy got so frustrated he went to a lapel mic.