Complimenting Another Man's Beard

Bearded guy here who really appreciates beards. That being said, I always hesitate to compliment my bearded brothers when I see them.

More specifically, when I am out in the world, I often hold off of complimenting a guy with a nice beard because I don't want to make them feel uncomfortable - even though the compliment would not really be sexual in nature.

How do bearded men feel if a guy compliments their beard? Is there a good (or not so good) way of doing this?