I have had my Vol's gear recognized and appreciated in many states in the US as well as Costa Rica, Honduras, Mexico, Canada, England, Germany and a few other countries.
However, my most memorable experience had to be in Jerusalem, Israel. I was walking up to the Temple Mount and to my left were about 100 or so Israeli soldiers. I was wearing a white hat with the Power T on it. Suddenly I hear, "Go Vols!" It was an Israeli soldier who was actually an American serving in the Israeli military. I talked to him for a while and discovered he was from Knoxville. I didn't even know Americans could serve in the Israeli military, but I met several who were serving that day.
It was a great experience, one I will never forget. Go Vols!