I've never heard of someone kissing a priest's hand without venerating what he's holding, or recieving a blessing. I saw a woman do this, and ws suprised. perhapse this is a Byzantine thing (OCA priest, Antiochian parishoner).
when I first went to DL with a friend, she took me up when people venerated the cross and introduced me. this seems to be the time to say little 10 second things like "this is my friend Trevor". I didn't venerate the cross, as I was still in a daze about watching the most beautiful worship service I'd ever seen. I didn't start kissing his hand until I started doing other things like venerating the cross and icons. I waited quite a while, as I didn't want people to think I was in the club without being invited
. but if I had done so earlier, no one would really have cared otherwise.