First of all, I think it's incredibly hot that your husband likes to taste himself. That's awesome. I always wanted a partner like that.
Secondly, I have the same feelings about snowballing as you do/did. It doesn't appeal to me and if I think on it too much, it can gross me out a little. However, I would be game to trying ONE pass - from me to a partner, end of story. LOL. I can see how that could be sexy.
Lastly, I laughed so hard at his final conclusion. Blow jobs are great, but swallowing isn't my favorite thing in the world, that's for sure. ;)