We have both gotten to the point where we don't care typically. Well, I care about kissing him after I have swallowed, but that's just my thing. He doesn't mind it. A little water though and I'm good to go.
The only time we had a problem with kissing after oral, I'd just had my tongue pierced. I don't remember if it was the first time or the second... But suddenly, my goofy partner decided that he was wierded-out by kissing after I'd gone down on him. I explained that nothing had changed, and if he hadn't had a problem with kissing BEFORE there was a post through my tongue, then why should he have a problem kissing AFTER I got a post through it? He realized he was being silly and immediately went back to normal.
I love to kiss my beau after he goes down on me. After a particularly messy session, he laughed at me when I suckled on his beard - he knows I only did it because I really dig tasting myself (I suck on my toys after use, etc).
As for him, he'll kiss me after I go down on him, open mouthed and everything. But if he has ejaculated in my mouth, he tends to hold back until I've had some water or something. He's not into tasting himself at all.