Hi all,
I think I can provide some perspective as one of the studs a hotwife would be having sex with, while the husband laps up the juices. I've been sexually involved with a couple for nearly 11 months now.
We are doing pretty much the exact thing that has been described. The husband likes for me to come over and fuck his wife bareback and dump my load in her pussy. Often he will eat her out afterwards. I have spoke to him about this and he says that he enjoys seeing his wife fucked and loves the taste of her pussy after she has had sex, not necessarily the taste of another man's cum.
Sometimes, him and his wife will be in 69 position and I will come up behind the wife and have sex with her while he is underneath licking her clit. He likes view and the taste of her juices dripping into his mouth while she is having sex. Many times, I have slipped out of pussy and into his mouth (obviously accidental). I do not consider him a cuckold. I consider him very in tune with what he wants sexually and what he enjoys.
From a superficial level, this appears like cuckolding, but if you dig deeper it is not. I think it is important to make that clear to the partners and your wife.