Okay, now, my well-meaning but rather unsuspecting grandmother heard tell of a guy who's the grandson of some lady she helps care for. This guy collects Fantasy, and was invited over to my house to see my collection. I play 40k, being the tank whore that I am. I'd feel quite rude if I turned the guy down, knowing how small a Warhammer community we have in my area.

Do 40k players and Fantasy players ever clash? Are there good mutual subjects to discuss? I suppose I could certainly give him paint/modeling tips to a limited extent.