No pics, no pics, no pics.
You just don't know what will happen at a later point in time.
I develop lots of young managers and one of the things I teach them is... your employees may love you today, but in the blip of a second, they could hate you and turn. Love you today, hate you tomorrow.... always exercise caution. Anything on a server will be there, somewhere, forever... with enough time and money to find it. Even if the escort or employee does not turn, someone else could.
I know I sound super paranoid, but it is a deal breaker for me if the escort requires a pic.