Several of our members traded their souls for MOE shirts, and they DO wear them. Heh, I've heard they got strange looks in school ... but that's part of beeing a robot geek!
Also, I worked hard to get a crew shirt last year, which I wear all the time. As for other teams' shirts ... if they were cool shirts, I would wear them! Especially during build season--I like to wear FIRST clothes for as many days in a row as possible
Stephen