Based substantially upon iSkin's earlier Revo for iPhones, Revo2 ($40) is a silicone rubber iPhone 3G case with interesting features. It's the first triple-tone rubber case we've seen, with a combination of a base color, a black front bezel, and clear rubber surrounding the ear speaker. Carried over from the prior Revo is a hard plastic face protector that can be placed on the screen, behind the case, or in the original packaging if you don't want…
