I agree with others that the TED is really tough and the 3D printed cover (like the one on Game Sack) is only for looks. Tough it feels a little better when handling as well, but that's no biggie.
Though the US/JP switch broke *off* within 5 cycles of normal use. X-P
Daayuum! I've flipped mine back and forth once when I got it just to make sure the switch moved. Then I switched it again to try it with my PC Engine to TurboGrafx adapter. Then I finally switched it back to US where it shall now live forever. That's still extremely awesome that such a switch is there, though.