Bottom line, if the PD wants to get you, they will find a way. There's no disclaimer, asterisk, magic trick or burning of sage that's going to save you from ending up with, minimum, a solicitation charge. You can argue that down with a good attorney and have it expunged if you don't already have a long string of arrests.
In playing this game, you agree to take on some degree of risk. Minimizing risk is what the best escorts do, but it's not perfect. If you're on either side of this equation, my suggestion is to always have a trusted attorney on speed dial.
As my own lawyer has said to me, while it's good to have a qualified attorney next to you, it's better to have one who knows the judge