I love kissing my boyfriend during/after he's gone down on me... He'll kiss me after I've gone down on him, but nowhere near as passionately. But he doesn't get skeeved out, just kisses me like normal.
It doesn't really bother me either way. Personally I'd rather not kiss right after either one preforms oral, but if my man comes in for a kiss I'm not going to shy away. I had an that was completely against kissing me after I gave him oral but always insisted on kissing me after he gave me oral.