As long as he doesn't spit on the sidewalk or out his pick-up window, I don't really care. Like Dana said: clean.
I think about people asking other people things like "would you still love me if all my teeth were rotted out?" and the answer, for me, would be "you wouldn't be the same person if all your teeth were rotted out, because 'this' person brushes his teeth and 'that' person obviously doesn't."