Don't have a clue, and I suspect that this may be state specific. That said, I think it would probably be more an issue of carrying the gun during the commission of a crime (prostitution) rather than just having a CHL.
A lot of criminal statutes will bump up the level of the crime if a firearm is used in the commission of the crime. I googled this and found an interesting article. Does not get to the exact point you are looking for, but it is a starting point.
http://www.mytexasdefenselawyer.com/...apons-charges/
Oh, and are you trying to have your own Oscar moment with that sexy right leg being exposed? (I like it, by the way.)