Great review and pics Buzz.
I also have all three, have used all three a good bit, and think your review is spot on.
A couple add-on thoughts:
1. agree with Eric Draven that with the simple (but very sharp) out of the box edge, a 440V Military is prone to edge roll. The Sebbie's I own (4) are not (3 BG-42, 1 older ATS-34). 440V does very well on things abrasive like cardboard and rope, metal film backed wall sheathing, insulation, etc.
1a. Putting a convex edge on the Military is a great idea however, and I will absolutely try this on mine.
2. I think my Military is in the Rc57-58 range... one of the slightly older Military's before Spydie dropped to Rc55-56 or 56-57 or whatever they are targeting now (softer to improve toughness/resist chipping better). I have never had any trouble sharpening 440V but have always used diamond stones. Hard 420V is a good bit harder to sharpen than 440V, but again diamond stones make task tractable.
3. The handle size makes the Military just past the comfortable range for me to carry in my front jeans pocket when I sit down, and I'm 5'-11". It's big. Period. It is also tall (spydie hump), and so indeed it fills the front pocket and makes reaching for, say, pocket change, a bummer.
4. The handle to blade ratio of the Military is too large. The pivot pin is a bit far back into the handle, and so there is opportunity there. Also, the handle is just really bigger than it needs to be for 98% of the hands out there... excessively so, considering the knife is meant for pocket carry. A handle that large on say a fixed blade is one thing, but on a folder intended for pocket carry... well... let's just say that with a few efficiency improvements in handle-blade ratio, and with S30V run around Rc60, I'd like a 3.5" to 3.75" bladed Military a lot better (especially with a modified grind that made the tip stouter).