Tested on a few falls, some major ... (while I was doing the "monkey" on a horizontal bar, without carpet .... ~ 2m ... yes, I know. ... ... not very healthy) and no special suffering of the device! For the thickness of the shell I'm fairly surprised by the real protection!
So just for that, I recommend! I also strongly recommend the use of an over-protective glass! and there, made careful not to take too thick because "lip" front of the hull is not very thick (1 mm?)