I bought a 2nd generation Moto E phone. According to this page at GSMArena.com, this phone has a "Corning Gorilla Glass 3, oleophobic coating" screen.
I have seen many on-line shops selling "tempered glass screen protectors", a layer of plastic one can buy to put over the screen. I found this useful with some older devices I had, where the screen could easily become dirty and scratched. I am mostly concerned about being able to easily clean away fingerprints and to avoid having scratches caused by fingernails or creating worn out areas of the screen, due to frequent use.
Is such a screen protector at all useful on a Gorilla Glass screen?