If you're a guy you really have nothing to fear, he's relatively friendly considering his mental instabilities.
But if you're an attractive female wearing something provocative he will call you out on it and call you a whore and other stuff - he's been getting more aggressive in that regard.
I always wonder where the guy lives, sleeps and eats when he's not out and about. The guy is ripped for someone so crazy, so he can't be homeless.