My only problem with this guy is his apparent lack of situational awareness. And what's with the guy "sneaking" up behind him with the video camera... creepy.
Anyways, good for him. Reminds me of the days when noblemen and gentlemen carried swords at all times - protecting themselves and those around them. I am a firm believer that an outward show of potential force (OC) decreases the likelihood of ever having to employ that force. It says, "I am an alpha male, I am ready and able to defend myself and others. Attack at your own peril."