Here is PSUs policy:
http://www.psu.edu/dept/police/weapons.html
This is really one of the stupidest rules. There have been a few articles in the collegian this week about it as well. I think that people do not understand that it is legal to carry them everywhere else. I highly doubt they will every allow them.
What they will do, in my opinion in upcoming years is to become like corporations are...i.e. badges to get in buildings, security officers at all entrances, etc. Not perfect, but much better than it is now.