Assuming the two main shoulder buttons will be Shift and Ctrl, how does pressing them solely by themselves with the lid closed(or open) trigger an erroneous event? If I pressed the Ctrl or Shift key on my keyboard all day, it would do absolutely nothing. Unless I mapped the shoulders in some media playback program as Play or Next Track, it wouldn't be any sort of problem to have them stick out a tad to make them easier to press for the user. As I understand it, the new Pandora case is more roomy so the slight jut of the shoulders wouldn't have any impact placing a Pyra into that case.
Well assuming it's setup like the Pandora, it will wake the device up from low power mode if pressed.
Also not everyone uses the Pandora case, but the case doesn't really matter..
Also I hate overhanging triggers on current consoles.. I just want to put my controller down on the couch for a minute while in a game, however when I do so I throw a grenade or fire my gun when doing so.