Though a concealed pistol license shall be issued to anyone who isn't a criminal and/or insane, it isn't illegal to openly carry one in this city or state. That being said, if the gentleman in question was threatening anyone it can be construed as brandishing.
Pragmatically speaking, I agree that you'll have much less trouble from the police and other civilians if you carry concealed. However, a right not exercised is a right lost.
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