So the girl does a bait and switch / uses old pics etc and it's the clients fault, lol speaks volumes about your attitude towards clients.
Actually this is not specifically about bait/switch, it's about disappointment and that can happen even when the pictures and description are correct. It could be that you just don't click, teeth aren't nice or she has a squint etc etc loads of reasons, but what I'm saying is that you don't have to go back to your car just to make your mind up. I also said if you are not happy the moment the door opens, then you really should walk, so there is my attitude.
I personally am a very very fussy person when it comes to relationships and when I was a swinger and what Escorting has taught me, is that you can't judge a book by its cover. I've had some amazing times with men I would never have looked twice at before, so although it is not quite the same for you, as you are paying to be with the person and already have expectations you might find that the disappointment is more due to those expectations than the reality of what you see.
The other thing to consider here James, is that since I have never done a bait/switch, it is hard for me to picture what you mean by needing more than 20 seconds to decide if someone is to your taste or not. I mean I know instantly when I look at a guy if I fancy him or not. Surely if you look at a women and when she greets you your dick gets hard you don't need to go back to your car? Or am I wrong?
What is wrong with taking your wallet in and using the car excuse purely if you really feel you need to escape without embarrassing anyone?
By the way, I was starting to feel unloved, it's been a while since you slagged me off. Cheers!