Personally, I have no problem with this guy’s reply to the officer. It was a ridiculous question to ask in the first place; just as ridiculous as if any one of us would say such a thing to a LEO who we approached, or approached us. The foolish statement illustrates the attitude that some LEO’s have towards civilians being armed, that simply because you’re not in uniform, a member of the brotherhood, that because of that, you are in some way not qualified, or to be trusted with a firearm and the same level of defense as they are.
That being said, IMHO, I feel that simple common sense answers the question as to whether OC has a deterrent effect. I don’t feel you can say in ALL cases, but I feel it is safe to say in MOST cases, the presence of an individual who is OCing at a location that is at the same time, being visited by a person or persons who intend to commit a crime, that those who intend on committing the crime will either delay their activity or forgo it all together and seek a venue that offers less risk to themselves. I think that is just common sense reasoning.
In the example presented here, it really doesn’t matter what the group of thugs thought the open carrier was i.e. plain clothes LEO, or civilian with a gun, the fact is that the group noticed that an individual with a sidearm was present and aware of his surroundings, and that seems to have had the direct result of them quickly leaving the area. Had the open-carrier been carrying concealed, the apparent planned robbery would most likely have taken place.