I think most (if not all) of the TGSPs are now on backorder after they all need to be redesigned. Looks like Google didnt give them a good idea of where ALL of the sensors were so the initial designs are covering at least one sensor.
If there IS one that is out there and known to work, please feel free to correct me, because Im looking for one myself! I have the IntelliArmor on order but they arent shipping for another 2 or 3 weeks. Skinomi is redesigning as well, and they are out the same 2-3 weeks.