Generally speaking I have no issue with anyone who openly carries a firearm. I would however like to add one word to that. "Responsible". I think the reason people tend to question or look at OC'ers in a different light is the fact that places like youtube are flooded with videos of people trying to get a rise out of the general public or LE and that is their main exposure to it. They do not see the hundreds of thousands of gun owner who carry everyday with whatever method who go on about their day without problem.
There is a difference in responsible open carry for a self defense purpose and parading into a steak house declaring it is my right to OC, go ahead and call the police I have a video camera. I CC as OC is not legal in my state. I do not carry a firearm to garner public attention or make a statement. I carry a firearm to protect myself and my family or whomever else I choose to.
Whether we like it or not many OC'ers openly admit that they are carrying a firearm and video camera to expose and educate the general public and law enforcement to the right to openly carry a firearm great but do it in the right way. Show the public and LE that you are the normal everyday person who is responsible enough to carry a firearm for self defense not bring an AR to the salad bar because you can.
You are absolutely correct in that we are all in this together but all it takes is one idiot to make us all look bad. The general public and lawmakers will not look at it as "Oh it is one of those OC guys making a statement" all they will see is guy with a gun doing something weird and then start a campaign against all gun owners. Think before you speak, speak before you act as it is a reflection of us all.