I mean it's one thing if you're actually using the thing and having a phone conversation. It's another if you're talking to someone who's standing in front of you or just walking around wearing it IN CASE your phone happens to ring. If you're in an office on the phone all day using it, okay. But take it off when you're not working. I just can't stand it. It's akin to wearing a condom round all day just IN CASE you happen to meet someone you end up shagging.
It's alright to leave the condom in your pocket until the moment you need it. It is also perfectly acceptable to leave the bluetooth earpiece in your pocket UNTIL the phone rings, you pretentious bastard. Just because it doesn't have a wire attaching it to phone doesn't mean you don't look like some ridiculous Star Trek borg-defect wandering around blockbuster.