Too thick and expensive (unless you already have a pad) for me. I'd just go back to the extended battery if I was going to thicken my phone again. Double battery life is a lot more valuable than the "convenience" of not having to plug in when at home. I quote convenience because people will most likely have 1 pad in 1 room which doesn't sound too convenient to me. If they could have packed some extra juice into it then we'd be talking. I don't think I'd use it for more than a day or two even if I got it all free. None of my cases or car dock fit, but I can not need to plug in at home? ...meh. I'm in on this when it's built into the stock phone or can charge wireless from like 20' away.
Edit - Also, the term wireless charging is a bit gimmicky... what is so wireless about it? You need to set it down on a wired pad to charge. So the convenience is literally just not having to manually stick the little plug in. And it's harder to use while charging that a corded one because you can't pick it up.
Sorry for ripping it. Just my opinion. To each his own.