Does UT specifically "allow" it?.....or do they just not prohibit it?
It's not specifically prohibited in PA making it legal by default.
In CO, the universities rules denying students' right to carry were challenged and the plaintiffs prevailed in the CO Court of Appeals. So, at present, students who have a permit can carry. I do not know whether or not that decision has being or is going to be appealed. The last thing I read on the subject is that the university was not happy with the decision and wanted to appeal it but had not yet done so.