I have to go with Kitty on this one. In fact, I don't think I've ever 69'd with a provider ever. RW women back in my day, in free love CA back in the 70's, yeah, I did that a few times. In those days it was something you did just to "check off another box," if you will. Because the books with their tantalizing line drawings said it was cool.
I have to admit I have a penchant for extreme close-up porn of the female orgasm, watching their pussies and anuses ("ani" is probably the correct Latin) undulate, all in response to a beautifully manicured hand. It's never occurred to me that I could see that myself up close in person. Thing is, I especially enjoy seeing a beautiful face and eyes and an unhibited smile peeking out over her legs and ground zero. Presumably, eye contact is impossible with 69.