Old topic, but I thought I'd add my $0.02.
I use the Nilkin protectors, ever since my 950XL (and wife's 950), they're on the whole households' devices now.
They're a hair thinner than most glass protectors, and conform to most screens (i.e. the 950 series).
They also have a "sandwiched" plastic layer, but I'm guessing most have that? It's supposed to protect against direct-hits, and it did exactly that, when my wife dropper her 950 recently, trashing the protector with a big, pointed crack, but not injuring the actual Gorilla Glass, at all.
I started using them for the conformity, but will continue to use them for both that, and the level of protection. They're sort of harder to get, some are on Amazon, some on other sites, or you can order direct, in which case they come from overseas, but they still seem to get her pretty darn quick (maybe a week, tops).
My 6P Nilkin screen still looks perfect, going on 8 months now, and I've dropped it a few times (it has a TPU case with a slight surround though, around the front).