As far as this,
Hooker murdered by psycho in Palms, after he paid $2k for her services
A high roller I know (not a friend, just someone I know), had an escort at one of the villas at one of the majors on the Strip. He told me she was on drugs and just generally being a pain in the arse. He lost it and started choking her. He said she escaped and ran through the property. Security got involved, got both sides of the story, she was 86'ed from all properties owned by this casino, nothing happened to him.
What he did wasn't right. I don't think he would have taken it all the way to killing her, but still he should not have battered her physically.
But given the way he described the girl, I can see how he got frustrated with her attitude, apparently he had paid her on arrival what she wanted and she wanted to leave almost immediately to go take care of something, and obviously (according to him) would not have returned, not because she was trying to flee the scene permanently, but because she was so flaky she had apparently arrived on the scene something like 20 hours past when she had said she would arrive, constantly texting him bogus excuses, and leaving him waiting.
He did show me some pictures from her "listing" and this girl was quite stellar looking with a fabulous body, but he said that the pics turned out to be a few years old, and that drug use had deteriorated her since when the pics were taken.
Over all, I've always been only into civilians in Vegas. When I was single and traveling, including in Vegas, I'd meet lots of hot girls at their work, whether it was at a high end watch or clothing store or VIP check in, and start dating them. It's not hard, just strike up a conversation.
Pros (or semi pros), are just pretty...vacant. Don't see the attraction of being with someone who is there just because she is getting paid.