I'm here to report after dropping my bike at ~60 mph.
Bought the guards several months ago, but for some reason decided to install them before going down the shore this past weekend. Looks like they saved my engine from getting scrapped. In fact, I rode it home another 2 hours after the crash.
http://imgur.com/P78M3Zf
http://imgur.com/uSYDrDY
http://imgur.com/VYHvk3Z
http://imgur.com/qGK3ICg
Gallery
http://imgur.com/a/uWob4
What you don't see is how much it bent inward. Good 30 degrees towards the engine casing. Half of the metal is gone, ground off. My bike went sliding for about 150' easy. Sparks everywhere. I'm okay, in case anyone is wondering. Protective gear works, don't neglect it.
There is a video if anyone wants to see.