I think women put alot more emphasis on a french kiss than a man for a number of reasons.
Most guys want to french kiss because its pretty cool and is a lead in to the next stage, whereas i think, and i may be wrong, but the physical act of sharing a tender kiss is surprisingly too intimate for some escorts, although this seems on the exterior to be a double standard when the escort may be offering cim or owo, the act of kissing is a deeply sensual and erotic act that can stir an emotional response that a professional liaison certainly does not require.