I'm in the 'no way' camp for the simple reason: POF. There really are Plenty of Fish in the escort ocean. So there is simply no need.
I did once pay a deposit. It was for a Swingers and Sinners party. Because I wanted to go to that party on that day and so POF did not apply. But they had enough reviews on this site that I was not worried. It was easy and they took the deposit off the fee so it worked out.
A swingers party is pretty different. I’ve never come across any swinger scammers but I’m not familiar with the one you mention and what it was like.
Tbh I’m surprised there are so many posts on the topic. I can just about imagine it in very exceptional circumstances if she clearly has to travel a long distance and is well-reviewed: but if it became common it’s far too easy a grift for scammers. Sets a very bad precedent.
Some will ask for your photo as well. All sorts of paranoid or OTT stuff that defaults as an assumption that the punter is psycho. A professional never does. She communicates, evaluates, and makes a decision.