Yea the States escorts have more involved screening because what they are doing is illegal and they are trying to avoid being arrested and because it’s more common practice clients expect it more. Although I imagine like anything else some will be in a position to be more interrogative than others.
For me, the only relatively reliable method I have got ascertaining a client’s attitude is exactly that, his attitude. By and large if a guy is friendly polite and affable in the email or on the phone, he is in the booking. Conversely rude arseholes in comms are rude arseholes in bookings. Most don’t hide it probably because they don’t realise there is anything to hide.