I've done the Belkin ultra glass for that reason - it protects, and with the applicator they have, the application was perfect.
I scratched a 6plus phone when it slid off the car console and landed on the floor. I had to kick it from the pedals and it was scratched by a rock or something on the matt. Apple took pity and replaced screen for free, but after that, I went with the Belkin.
But I'm skeptical with the lack of bezel. And the Belkin glass chipped and scratched. So I'm going to give the Apple Folio leather case a test.