It's a cool idea, but horrible for fish. It can't be heated, is less than a gallon, and would be impossible to do the amount of water changes you would need to do. If your looking for tanks for dorms, try the mini bows or 5 gallon tanks. I'm taking a 10gallon with me in the fall. :)
Also, you can't mount it on the wall in dorms because you aren't allowed to screw holes into the wall. You get a fine at check out unless you fill them in.