I've searched and haven't seen this discussed on here.
A popular thing to do these days is to convert your remote and key combo into one combined case with a flip key. I've seen version were the body from the later P2X models was used, but that required modifiing the circuit board to make the remote fit. In addition the buttons don't line up correctly which requires even more modification of the board or loosing the trunk opening button and panic button.
But thanks to China there is now a X70 and X40 flip case available that looks factory and is adapted for 2/3/3+1 button remotes.