BBBJ and GFE fan here - Love DFK and LFK, and I'm not totally out if CBJ is the only offer, but I'll admit, I'm probably going to pass over quite a few very sweet and lovely, pretty girls because of that.
I just got back from Vegas, and the standards I found through review sites there were: GFE Lite, GFE, GFE+. GFE++
For instance they represented the CBJ with Kissing/DFK = GFE lite.
I've noticed many, many providers say GFE - which I think they are taking it as CODE for "I go all the way" not so much that it's a session filled with passion, excitement, and lots of non-sensored "untranslated" oral activity. I'm relating this particularly to girls I've searched out on backpage.
I think if a girl choses to actually be GFE, then they have the absolute right to call out YMMV if the dude is not real keen on hygiene.
Personally, I'm a little bit freakish about my hygiene, I do a fair amount of grooming down there, and I like to ensure that my business is very fresh, tasty, uncluttered, and enjoyable to my temporary girlfirend. I think I get alot more mileage as such.
Rev