Same at Penn State (when I was there), you'd see FIJI on sweatshirts and tshirts all over the place. I think what 33girl is saying is that campus to campus, certain houses may not wear letters for whatever reason they have, and on some campuses it's more campus-wide that wearing letters is "looked down on". When I was in school, Betas didn't wear letters on our campus. They said you would "just know a Beta" when you see him. I had a guy in several of my classes the last couple years, he finally wore something that identified him as a Beta right toward the end of spring semester senior year. Great guy but I never had any clue he was a Beta until that moment (and yes, I did tell him
).