The shark knife isn't going to win any beauty contests, but that's OK, because shark knives aren't about looking good, they're about getting the job done. And the job here is looking insanely tough, but with a tender, whimsical side. The Klingons have a word for this, most often translated as "trying too hard."
I write books. My latest is a YA science fiction novel called Homeland (it's the sequel to Little Brother). More books: Rapture of the Nerds (a novel, with Charlie Stross); With a Little Help (short stories); and The Great Big Beautiful Tomorrow (novella and nonfic). I speak all over the place and I tweet and tumble, too.