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.