Bought one of these at a sporting goods store 7 years ago and liked it so much that I hunted and hunted for another when it got "lost" a year or so later.
I've carried it everywhere since, and use it for everything: opening mail, trimming casting flash, cutting boxes. I've cut copper cable up to 0ga, punched through steel sheet, cut gaskets and shims, shaved pegs, used it to pry, as a screwdriver and as a punch. I've also cut linoleum and drywall with it. The only maintenance I've needed to date is sharpening it (a cheap ceramic/carbide pocket sharpener works fine for me), a touch of oil from time to time, and periodically I disassemble it and clean the dust and grit from everything.
The only flaw in my mind is that the screw heads are too soft and strip very easily. The blade is sturdy and (still!) straight, holds an edge well, and is hard enough that almost no material has been removed by sharpening. It's also wide enough to make an expedient eating utensil.
It's strong, it takes and holds an edge, and it lasts. What else do you need in a knife?
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