I am in Virginia, OC is rare in public, so I don’t typically OC in public. The only exception to that is as a rep of rights groups. As a rep, I usually do OC my handgun at gun shows and other events. They want the public to see ordinary people carrying and that we are not the problem. Some members OC and others CC at these events, and depending on what I am wearing, I might be CC, too.
At gun shows it is never an issue. At other events, it isn’t the OC at issue, but that the organization is pro-rights. Typically, it is not much of an issue, but on a rare occasion, I may have a conversation with someone that is either anti- or on the fence. Depending on their maturity level, it can be an amicable discussion or one where their fear factor outweighs their ability to have a meaningful conversation. The only thing one can do at that point is just remain calm and let the person display their irrational fear and antics to anyone that is passing by or watching. Some of the more difficult discussions are with those that believe in some “gun control”, often times those tend to be hunters who only believe that their hunting rifles/shotguns are the only firearms that people should own.
People typically have strong opinions of CC and OC. The typical reason given for CC is a perceived tactical advantage where a criminal will not know you are carrying, and thereby will not target you because you have a firearm. One reason typically given for OC is to let them know you are carrying and deter a criminal act due to that. I recently was told a personal account where the perp was coming toward the OC person, then turned around after the firearm was noticed.
Personally, if I notice someone carrying, even a LEO, I always make an assessment of how they are carrying. I have seen a few issues with OC in the past couple of years. One was a LEO directing traffic at a crosswalk - retention strap unsnapped, with people walking right by her. I decided to just walk away quickly, as I didn’t want the officer to get the wrong idea, if I mentioned the problem. The other was an armed guard at my office - carrying in a holster that looked as if either the firearm was going to fall out or the holster was going to break off the belt, as it was swinging very loosely as he walked. The worst offender was not due to OC, but that another guard at my office stated he never fired the handgun he was carrying for his/our protection (???).