The only complaint on my part is that the shell really sit very tight, although this is normally good, but I lack guidance or instructions needed to put on a good 10 min to the shell via the S6, and had this permanent fear to damage the unit.
For people we me the ad hoc basis would like to have some variety in the casing is not optimal, since the shell is even harder down as up. Note should also during the upward tulip shell the screen film is removed quickly at the edge. Since turns me the question whether one can ever use the shell when using a bulletproof glass window on the device yet.
All in all, the shell but a real recommendation, you should provide only inquiries to the manufacturer if the envelope with bulletproof glass window on the display is still usable.