I think it's okay to fool around with kicks, punches (these two for only the guys who you know are high level, so that you don't shave off chunks of HP out of them) and nudges at the beginning of the round or when there is nothing else to do.
On the other hand, I totally understand the frustration of an xbower or archer who gets one of the above during reloading or aiming. Just don't do it to your ranged allies guys. I haven't even ever played as one so far but I get it.
As for unsuspecting ranged enemies behind whom you have successfully snuck, you know what to do. Don't limit yourself to nudges and punches and kicks only:
