Well I would never hang out in a bar, drinking is not my cup of tea. But in a different setting if a man came up to me and offered me his hand to shake and said, for example, Hi, I'm John Doe, how are you doing tonight?"
I would appreciate his straight forward attitude. I would return the handshake and tell him my name, and how I was doing - and hopefully from there a conversation would get started. I would hope he would be funny, and kind and not overly aggressive nor arrogant (can't stand arrogance, but love self-confidence--a fine line).