Hmm this topic got me thinking about it all.
First thing is that i only like gloryholes in public toilet stalls. If I am at a sex venue then I prefer all my action with no walls between us. I want to feel my hand on the back of your head as you suck my cock, or to feel my hands on your hips while I thrust into you.
IF I am at a gloryhole, and you are sucking my cock, then I would probably prefer you to just keep sucking until I shoot, but if you must back your ass onto my cock, that might be ok too, although my preference is not to fuck with a wall between us.
If you behave poorly that's your choice, just as its my choice to walk away. Anonymous sex and being a filthy slut are no excuse for poor manners (as my dear mum used to say - not really)