I don't like the black coating (or any coating) on my blades, but that is a preference of course
the real problem with these, imho, is the low end steel they use - 4cr13
it's just not going to hold an edge for long
kershaw started using this on many of their ultra low end knives:
valve, camshaft, airlock, starter, lifter, filter, spoke, grinder, cathode, misdirect
(I will not buy any of these, and they really should be under $10, since that is what competing 4cr13 blades are typically priced at)