When the door opened Harry expected the new patron to order and find his own niche to hole up in, but instead he turned his attention towards him. Harry gave him a brief nod of greeting, being careful to avoid eye-contact. He might be happy to meet new people in this world, but they didn't have to know everything about him all at once.
As he put in his order, Harry gave the man an appraising look and decided he might make a decent drinking buddy.
"Yeah, I'm new. What gave it away?" Harry asked as he pushed a chair out, inviting the guy to sit and talk a while. "Harry Dresden," he said in greeting. "I take it you've been here a while?"