The black coating does aid in corrosion resistance, so it depends on how much that matters to you. I use my uncoated 940 to cut food and other wet things. I wipe it off when I'm done and no signs of rust so far. If rust is a big problem for you then you probably want it. If your knives don't usually rust anyway, or you use Tuff-Cloth, then it's not necessary. A lot of people don't like BM's black coating because it scratches off fairly easily, and looks ugly when it's scratched.
It does give the knife a more tactical/scary look to the sheeple. If you want this knife to be sheeple-friendly, you're best off with a satin blade and green (blue, or red, not black) handle.
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Jason aka medusaoblongata
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