Not really. You cannot really "see" a man licking down there unless he has some preternaturally long tongue and then, I'm slightly nervous.
To segue about "watching" sex, period, I'm not that into it. When I watch two people making love, I become a little detached. It's hard to explain. I've seen it more than most but although it might make me feel amorous that really isn't saying much with regard to my personality.
Watching a train wreck, someone putting mustard on a sandwich, feeding the cat, reading literary porn, mopping the floor ... can make me horny. It's in my chemical makeup to be just naturally libidinous, which honestly is a curse at times.
But watching a sexual act doesn't enhance things for me much. I'm more of a hands - on type.
Elisabeth