I've got a licker here too!
I don't mind the oh I'm so happy to see you lick when I pick him up but I don't like the slow methodical there's no reason to be licking licks
. I always try and say no and discourage it.
I have a small scratch on my leg and he always wants to lick that too. Someone told me dogs have something on their tongues that heal cuts but I don't know about that. I stick with the Neosporin!