Question about STD/STI

[Kisser Fan]

A little bit ott. Skin to skin contact isn't going to put you at risk of HSV1 and 2 or HPV, do you ever shake hands with anyone for example?
Personally, I never avail of OWO or reverse oral for exactly the reasons that concern you, i.e. it's not safe (most around here seem to be happy with this risk though).
My advice to you would be this, if you're interested in going for an escort appointment, by all means do so. If as would seem to be the case, that you are particularly paranoid about catching an STI, then seek out escorts who don't offer OWO and don't perform oral on the escort yourself. Following these simple steps, it's highly highly improbable that you'll catch anything, and you'll certainly enjoy yourself.
Have fun