There's a young sales assistant who I've been working with who is straight, but I've talked to her about what an exhibitionist I am. She has a good sense of humor, also. Anyway, she does have a voyeur streak and she seems to enjoy my "antics."
For what it's worth, the younger sales ones are less shockable. I might be wrong about that because I probably just "misbehave" in less conservative, younger stores. Even the chain stores downtown and around the Lower East Side have goth like or not traditional people working there.