I’ve had this Spyderco Tenacious for about 8 years. Carried it every day and used it every day. The weird thing though is that in all that time, after an initial hone, I haven’t sharpened it once. I slice up cardboard boxes all the time - which will dull an edge like nothing else - and everything else imaginable. Stayed sharp. Last night I took it apart, cleaned it, oiled it - and what the hell, sharpened it. Definitely an improvement, but still a testament to how good it is that I could slack off for so long on sharpening it.