Fenix 6S Pro vs. Sapphire

Opinions please on the Fenix 6S Sapphire Carbon grey DLC vs. Fenix 6S Pro Black.

I only use the watch for road running and walking, I've owned a Forerunner 645 for a year with no scratches on the screen or bezel (I think this also uses the Gorilla Glass 3?). Should I just go for the non-sapphire black one? Does the DLC coating add anything if you're not doing rock climbing etc? Is it lighter being DLC coated titanium instead of black painted stainless steel? Also I don't want to screen to look dull for the sake of added protection that I probably don't need.