Good write-up. I agree about the need to really tighten the screws on the mirrors to eliminate all vibration. I also agree there is no need to keep these mirrors on when the doors are on, assuming you have the factory mirrors, since these quick-release mirrors can be removed very quickly.
I'm curious though about your need to replace the passenger side mirror. Maybe it's because I've lived with the poor visibility of the small Harley mirrors and also the factory mirrors with the RR relocation brackets, these mirrors give me much greater visibility with the doors off. Did you find that the passenger side mirror produces a blind spot? Between this mirror and the 2" mirror on the a/c vent, it seems to provide a field of view that is more than adequate.