Ditto....my daily driver is a Rolex Sub and not a scratch on the face.
My concern with the glass on the Sports Model wouldn't be scratching, but rather shattering.
We all seen way too many iPhones with shattered screens.
I will most likely get a Watch Collection because of that.
Keep in mind that Sapphire, while extremely scratch resistant, shatters much easier than Ion X glass, which I assume is comparable to gorilla glass 4. For scratch resistance, Sapphire will win; for shatter resistance, Ion X will win.