I was expecting the opinion to ignore open carry or try to minimize it but he directly addressed in detail with respect to what I city could or couldn't do. Still I'm sure there will be some city that tries to ban concealed carry by ordinance thinking it will ban all forms of carry.
I know it is out of scope for this specific opinion but it would have been nice if he had included "there is no statute which allows for limits open carry anywhere by any entity in the state, as the state Constitution does not grant that power to the General Assembly". As far as I know that is still untested in the courts. My local police department acknowledge that open carry inside that PD building that is open to the public is allowed. That came out when the mad mom's tried to hold their meeting in the community room there. They had thought all guns would be banned in the entire building.