I don't plan on really visiting inside any buildings. I can see how the police can have different views on legality and not understanding that their policy is not state law. But at that point it becomes a fight to prove your point of view which is not worth it.
Officially it is against university policy to carry on campus. I don't know about main campus but here at IPFE our police department is an extension on the Fort Wayne PD so they are true officers not rent-a-cops.