I have a S2 aluminum SG watch... it took several hits that made me wince... after 2 years of wear, I have one small scratch on the edge of the screen and for the most part, the body is flawless - with the exception of underneath by the sensor.. the coat is like chipping!
View attachment 791265
I think with the full ceramic back in the series 4 this will not happen.. because no aluminum part touching your skin....
Correct me if im wrong...