It looked like his design incorporated space for a standard case.
Actually, without a case I think there might be an interesting edge detail.
That wouldn't affect functionality, and look cool too!
> Apple fixes or replaces it for free
Where? In the US they charge $29 and up for repair with AppleCare+. $29 for the screen, $29 more if you damage the glass on the back too. $99 if you damage the camera or anything else that requires replacing the phone altogether.