I think this should be considered in the same way as watching porn. If it is regular mono/heterosexual sex they show there it should be ok, you just loose your precious privileges. But if they show abhorrent forms of sexual behaviour then you are subject to JC at least. I must admit I am not a regular visitor in strip clubs, have just seen the concept in several criminal series in TV. Mostly it seems there is just one girl undressing, but maybe they are imaging just a cleaned up version of what is going on in those clubs. Ofcourse if it gets physical that is totally another story.
CP