Smoke,
I have the old MPU sold through Bladeforums. It's 440C steel and came with a horrible, bulky and ill conceived kydex sheath. This sheath also scratched the hell out of the blade finish. Supposedly, Edgeworks is making the new sheath. The sheath model I saw at Blade was 1000% better. Whew... now that I got that off my chest...
The MPU itself is a really stout, ergonomic knife. The 3/16" stock combined with the handle design give it a comfortable sure grip,better than say the REKAT utility. There is also a pronounced thumb ramp that helps for hard cutting. Since I use this knife for flyfishing (where I am wading in water), I appreciate the 440C. And, since the steel is "stainless." I actually started to polish of the original finish which is pretty messed up. I like this knife well enough to have a multicarry sheath (courtesy of MD'2020) made to replace the original.
I think the new MPU's are coated A2 or Titanium.
sing
AKTI #A000356