Good protection through material mix

Just received the Otterbox and attached to my iPhone 4S. The attachment can be accomplished quickly and accurately. On the homepage of Otterbox there's even a video (English) explaining the attachment. The included display Schuzfolie I have not attached, because I already had one of Artwizz. The iPhone is very protected and is still easy to operate. Even on dust protection for the headphones and the connector can be omitted because the Otterbox covers everything. Of course, the iPhone is bulkier through the box. The box does not smell unpleasant and haptic is also passable. This is partly due to the mix of silicone / polycarbonate. This is likely to catch a lot of impact energy from knocks and blows. I tested not however. Would the Otterbox (so far) will buy again.
Addendum: The iPhone 4S (the end of August 2012) is three times like me so far out of hand. Partly surcharge on asphalt. Thanks to the Otter Box so far no scratches.