I agree Walt.....totally impractical............buuuut having said that, If I could buy just the block without the knife, I'd buy it! I always carry a spyderco of some sort so the bayonet would be unnecessary, but the block would be sweet. I don't think I 'd ever have to break a window with it (you never know), but the added weight up front would make follow up shots even easier than they already are with the Sp-01.
Take care, Mike Arnold