Each to their own mate, but as a punter it's the last thing I'd want on a punt to have someone there!
I went to a party once in London {1st and last one!} and whilst banging some whore in the room, realised there was a guy stood at the doorway wanking off while watching.....from then on I was trying to play snooker with a piece of rope......
I'm sure there are guys out there that wouldn't mind but just not for me...good luck