First time that I have heard of this.
"I went back to the bar for a second round and another girl sat down next to me and we chatted for a couple minutes. I saw her talking to others including dancers before she sat down and they all seemed to know her. However she wasn’t a dancer at least on this day, but was offering services outside the club. I’m assuming this is a problem for the club and thus the large cover charge for women in the evening."


There are a number of clubs in Louisville that won’t even let lone women in. Some of them convince customers coming in to escort them. :)