I'm wearing mine all the time and when I went to school to demo Darth's competition (trumpet) solo for the band teacher today (I'm Darth's accompianist -- did anyone here even know I'm a semi-serious musician -- used to be professional-calibre), I showed up with my iHub t-shirt and Darth had worn hers to school too.
She's up there wearing it now while playing in the stage band (bass and trumpet) during the basketball tournament.
I'm bringing a bunch of them to Vegas with me next week to give to my fellow participants in the racing school.