Yup. I love spydercos.
I've once used my Spyderco Endura 4 as a kitchen knife, cutting onions for a cerviche. And really good kitchen knives are some of the sharpest things you'll ever encounter, so the comparison is a definite mark of approval!
In fact, if you've seen my Elishewitz Tao Pen review, when I talk about the darned good folding knives you can get for $70 and less, I'm specifically referring to spydercos!