Every burly, manly man I've even seen had a nose. Usually big, mashed and bent.
Jaws and brows come in handy too.
The lack of nose is...disconcerting. And from the skill displayed in the rest of the piece(and your other pieces) I can't imagine adding a nose to be too difficult.
Regardless, the pixel work is excellent. There're a couple spots on the left where the black AA doesn't look quite even, but it's only apparant if you're looking for it, so no biggie.
I love it. Awesome, thick leather accessories, and a goatee! I don't mind the lack of a nose either. Very cool