I've actually seen it in person. 1988 Delaware Enduro, my buddy tried to use a root to jump a creek like he'd seen a better rider do. Buddy came up short and augered into the far bank. On impact, he basically punched the barkbuster as his throttle hand came off of the grip and broke a couple of bones in his hand. That said, I still run barkbusters on my dirt bikes and have thought about adding them to my trials bike. I run them as low (rotated forward) as possible and feel good about the trade-off between lever/hand protection and the risk of injury from the barkbuster. YMMV!