I agree with cpirtle, my fellow NE Ohioan, and the other M2 steel owners here.
I've owner a M2HS Nimravus for a while now, and although its eceived considerably less use since I bought a CRK Aviator to replace it as my "outdoor pal," I, too, feel that
as long as you're willing to perform good BASIC maintenance with it, you'll be just fine.
I'm close to the lake, and the air gets quite moist here -- and before I was wiser, some of the mild steels on my aisoft collectiom gathered oxidation rather rapidly (we're not talking hundred-dollar toys here, but actual custom-built airsoft pistols whose cost is between that of a real-steel Kimber and Wilson, so yes, it was worrisome). I now store my inactive goods in a gunsafe with proper dessication, and rotate monthly wipe-downs with Sentry Systems Tuff-Cloth. I've not had a problen during the past 6+ months during which the Nimravus has been inactive.
The truth, though, is that for my EDC folders, I tend to go for "stainless." Sure these steels may not hold or take a good edge as readily or as easily as D2, M2, etc., but I am willing to give up some of that to guarantee absolute minimal maintenance. Example? I leave my EDC Spyderco Viele (VG-10) clipped to my pants pocket, rarely mind what it cuts except to wipe it off on my jeans or a paper towel if obviously corrosive), and oner the last two years, it hasn't tarnished one bit despite probably a near-abusive once per quarter-year cleaning and sharpening.
The knife is only a tool -- and the steel that goes into it should match the tool's purpose. There's no inherently bad steels as long as it is natched for its intended purpose.
Sure, "exotic" steels are cool, but as an enthusiast, I'd be much more inclined to give a nod to a salt-water diver who is using a 440A blade, rather than a M2.
Be honest with yourself -- your use purposes and your maintenance schedule/available spare time, and you'll be just fine.
Allen
aka DumboRAT
Note, if you use the knife to cut foodstuffs, be careful what type of protection/lubricant you select; Tuff-Cloth is a love of mine, but it's not too healthy to eat!