I was wearing a pair of Lean Angle jeans (lined from the waist all the way to the cuff with Kevlar) when I was hit broadside by a pickup truck and knocked 100 feet. My lower left leg was punctured in two places by the gearshift lever and foot peg... but there were no holes in the jeans. So, the jeans either rode up to expose my calf, or the jeans themselves were pushed into my calf. I also have Rokker jeans, which are also lined from the waist to the cuff, and I'm sure those would have performed just as well but I wasn't wearing them at the time.
I had a massive hematoma on my left calf, and another on my right hip where I hit the ground. I spent a month in the hospital.
I don't know how, but I didn't break any bones. Even without broken bones, I had a lot of injuries... hence the long hospital stay... but I do know how I escaped without ANY road rash. My Lean Angle jeans, a heavy Fox Creek leather jacket (with armour), heavy boots, Dainese race gloves, and an Arai helmet.
My left hand was crushed between the handlebar and the clutch lever. I did end up with black fingers and lost several nails... grown back now...but I still have my fingers because of the carbon fiber knuckle protection in those gloves.
Wear good gear. I don't know what else to tell you. You're not saving any money buying the cheap stuff.
ALL of that gear was cut off me. Sigh. I miss my Speed Triple.
I know they're pricey, but I can't say enough about my Rokker and Lean Angle jeans.