just a thought,
has anyone tried to flash their sim card while it is in the iphone? or even flash a dual sim card while its in the phone? all it would need is a few small wires coming out of the sim card area, like 30gauge or the like.(you may have to dremel a super small area of the holster out for the wires to fit) I think it would be possible, but would it work?

edit: well i thought some more, and i figured youd have to reflash it every time you turned on your phone. that is not fun...