I wish nevertheless to say that every day, I use another shell, silicone, with a nice shape "S" on the back.
This, my "One" goes in two hours a day when I go to work.
Indeed, I am commuter and I used to watch videos.
This case allows to put my Mobile in the right inclination, once set, does not change.
Clearly, the "red velvet" inside does not slip :-)
Only small problem:
Hull brand strong enough to place the fold (the dark side ... uh, I mean the black side of the hull) and,
from the first use.
It would have been interesting for HTC to provide a "pre-bend" in this place, which is not the case.
The product could become even more perceived quality ...