re: So I bought an anti-glare tempered glass cover for my iPhone 6...

Reddit seems to be obsessed with dbrand, and I can personally vouch for the quality since I have one on my nexus 6. Installation can be tricky but following their video instructions is a must. Very helpful, and the skin application is forgiving. You can pull it off and try again to get the alignment right, as long as you don't press down on it until you are absolutely sure it's where you want it.

I didn't know they made anti-glare style tempered glass screen protectors.

I've been holding out for the right glass one that's cut correctly. Not a fan of this new-ish trend of curved edges on screens.