It's nice to hear that the screen is becoming more durable. I've already broken one screen on my 6+ because I had it in my pocket and my jeans were a bit too tight and put a lot of stress on the phone.
It doesn't add unusable thickness to the phone and as a bonus it gives you more friction so if your hands are sweaty you're less likely to drop your $1,000 magic pocket supercomputer (completely smooth rounded corners look nice, but sure are slippery and drop prone).
