I think in the time of prep, using a condom is not that common, but a preference is a preference. It is something that should be hammered out before an encounter. If your profile, or his, states condom only, that should be respected. Since you hired him, why would he care? He's getting paid regardless and I'd think he'd prefer a condom. I can't imagine that the escort demanded no condom. Well, I'd take it as a compliment! He was getting paid and still wanted the full experience!