I'm facinated by the pursuit of ultimate sharpness and will soon be sanding convex edges onto most of the blades in the house.

Trying to resharpen a convex edge with a sharpening stick or stone in the field, and stroping it on my belt, would likely make a mess of it.
I will select a good knife for the vehicle's emergency kit.
The scenario where this knife gets used doesn't allow for touch ups on a sander.

So, what's the appropriate edge geometry for a knife that has the constraint of being field servicable?

Touching up a convex edge is as easy as any other type edge and does not require a belt sander or any specialized equipment. In SHTF situation, you won't worry about "messing up" your convex edge. Some of the finest survival knives in the world, including Fallkniven, use the convex edge. BTW, before I got my BRKT strop, I used an ordinary crock stick or ceramic rod for touch ups. You only touch the very edge itself. But if all you had was a flat sharpening stone, it would work fine, possibly creating a secondary bevel, but who cares? If you look closely at old hunting or kitchen knives that have been hand sharpened for many years, you will notice that the sharp clean secondary bevel edge is long gone. Years of use and hand sharpening at various angles has produced a convex edge that usually cuts even better than a factory bevel did anyway.

Heh. A convex edge (Fallkniven H1) I'm finding is actually very easy to maintain by hand with a flat sharpener, so long as you don't mind it looking chewed up. I assume a rod works just as well though I haven't tried it on my knife because I haven't got that kind of sharpener. Mirror finishes are nice, but for practical cutting performance they are not necessary. In a SHTF scenario, sharpening your knife by hand using your knee as a work surface is completely plausible, and you're probably going to end up with some flavor of ugly-looking convex anyway.

you dont want the learning curve to come while in your SHTF situation so really get the hang of whatever style you decide on.

give everything a chance,give every type a try but in the end DO WHAT WORKS BEST FOR YOU.that is the best advice on sharpening i've ever gotten.

also,i think a full convex grind is much more important and effective than a convex edge itself.

a sharp edge is a sharp edge and the difference one will notice between convex or not wont be that big,especially while in the middle of SHTF.

i think its what comes after the bevel that makes a bigger difference.bark rivers convex edges are great but i think its their full convex ground blade,along with that of the NMFBM that really make them shine.

my NMFBM is combat grade and the CG's didnt come with convexed edges but they do have a full convex ground blade and i really noticed the difference that made on its performance.

I always thought that the chisel grind was the easiest to maintain.