It's a matter of mutual trust lol. Met a fare share up country and I'm all clean. If anything escorts are cleaner than your average girl you might pick up in a club.
How can you trust someone you don't know, I get what your saying re escorts being cleaner than some slag in your local night club and there are some I have read about on this site and various profiles that will do it with valid certificates, but even then considering how many different men there getting fucked by each day it's hardly something I'd put much trust in.
IS IT REALLY WORTH THE RISK !