A:AnswerI've had his case for three generations, it protects the phone and acreen from normal drops form your hand or lap. I wouldn't recommend testing it from a few stories up. As long as surface is flat you should be ok. Dropping it on rocky surface is risky because it could still crack the screen.
A:AnswerMy girlfriend has had this case on 2 different iPhones and over time it does develop some superficial scratches but they are not very noticeable unless you are looking up close.