I wouldn't put this on my phone. But you have to realize that this is a good option for someone who really needs the extended battery life. But seriously that looks horrible.
Does it fit in the regular case(pouch, not backing) from verizon? I'm thinking of either getting that one or the 1600(i think its that one).
i think the pictures answer that one for you. you can get a good idea of how much it protrudes and just compare with the case you're using. my assumption is a no, most of the cases seem to be tight enough with the original battery.