Well I'm not a big fan of the domino grin especially if I have to break into a dodgy italian accent to get it....
As long as you mention it prior to having sex and giving the poor guy a shock when he pulls out and sees a red cock. lol.
It generally doesn't smell as good but certainly no reason to stop having sex for me anyway.
It does have the added benefit of more lubrication and I have found that the women tend to get hornier at that time as well.