No but your scenario makes me wonder if I should. I've always avoided scrapes with people due in large part to the fact that I don't like to fish where other people do and I'm a pretty nice guy. Over the last decade though I have seen enough human trash and heard of encounters friends have had that make me seriously consider it.

On the other hand, I'm one of those karma guys.....if I buy one, it will invaraibly invite trouble and get myself in a situation I would regret later.