Just as an update, I too ordered one of the Orange shells for my AT&T Lumia 830. Unfortunately, there are problems:
1) If I use this shell with my DT-900 wireless charger, it omits a high-pitched hum. The connection-coverage area seems to be smaller than the AT&T supplied shells.
2) The Orange shell does NOT work at all with my CR-200 Wireless Car holder. I assume this is due to a variation in the placement of the connection of the shell to the back of the device.
So, it looks fantastic, but may not be all that practical, depending on your needs. I had to go back to rocking the AT&T supplied green shell.