I'm definitely in for a shirt.
My $.02 is that it i think it should just be "cellar.org" with no
www. or anything. And, despte the respect I have for UT and the appreciation I have for those who took the time to express the toad in the design, I don't think it works very well graphically with the other elements - it looks 'forced.'
I like the designs that include the coffee shop tagline but I wouldn't put it on the back but in small font under the Cellar logo on the front. For me, the simpler the better. For me, Its less of a promotional shirt and more of a membership shirt. I wouldn't put anything on the back.
But, whatever the final design, I'm in for an XL.