i'm using it right now with spigen slim armor, i could say this thing is somehing else
easy install, very scratch resistant and tough i say, BUT!
when you play games and the phone heats up, it peeled a little at the sides!!!!
thats the case if you use it face down, gravity pulls it off
Note: don't know wheter its just me or anyone have this problem
might be suitable with cases with bigger bezel to keep it in place.
overall, i can still live with that. no scratch at all from countless time in-and-out from my jeans
glass cleaner works perfect with this, but don't spray it directly, might get inside some holes
my doughnut falls on it once, no scratch at all