Hi - I watched the videos and listened to the first complaint. The website started crashing my browser after that so I couldn't listen to the other ones.
I'd like to first say that I support what you did here if it was in protest of restrictive open carry laws. I know a lot of folks here think you're out to just get attention, and maybe that's the case, but in this instance it looks like the town has a particularly unreasonable open carry law and I think it's right to challenge it.
In the video I thought that you were answering too many questions about the firearm. The female officer was obviously fishing for some sort of officer endangerment charge. I wouldn't have answered any questions asked by her, I would have simply reitterated that the firearm was loaded and could be dangerous if handled improperly.
I also felt that the male officer was really just trying to do his job, although he was wrong, I didn't feel that he was "out to get you" or any such. The female officer, however, was complaining out the door that she couldn't ticket you. In that instance I think it would have made the stop go a little smoother if you'd been slightly less confrontational with the male officer.