The covers are only really designed to help stop you grinding through your cases aren't they? Nothing to do with absorbing shock.
Absolutely, but if the fasteners touch down before the cover then the cover isn't going to do anything, and they will transmit straight to the crankcase... And if the fasteners snap then the cover won't even be there. Seems a very poor design. GBracing covers have the cover material sit proud, and all the fasteners back in recesses.