Man, I set myself up...
So, I'm cruising at dusk (work 2nd shift now) during lunch break, easy hill, just some pumping turns. I turn in just past my car, and into a vacant industrial lot to slow down. I hit some unseen loose sand, overturned, snagged some front-end wheelbite, Going Down Quick, I lift my front foot, hoping to land on the kneepads. My toeblock snags, the board kicks forward, back knee touches down fine 9on pad), front leg lands on this BURLY griptape along the side of my calf. Un-real skin shreddage... Had to put two 4"x4" guaze pads on this scuffer, and limp back to work for another 3 hours. It's healed up nicely now (though I'm missing some freckles on that leg), but Itches like blazes.

Lesson here; Don't get too aggressive with the griptape, or, don't ride unfamiliar roads at sunset... Whichever...