I would go with the Swamp Rat. You will be satisfied with the edge retention of the Sr101. It is modified 52100, a high wear ball bearing steel.
Swamprat's warranty is just stellar. The steel will be some of the toughest you can find. They do a great handle treatment too. Plenty of grip, when your hands get wet or guts all over them.
It is a bit more prone to rust than the CMP3v will be, but should not be an issue. I carry high carbon steel all the time.
Bark River makes a lot of cool knives. There are a few complaints that pop up now and then, with both their grinds and heat treat. I have seen more than a few posts about edge blow out on their knives.
They are hand ground, and this can be an issue. If it happens, based on prior posts about it, they won't give you a new knife. They will just grind a crap load off your damaged knife. Grind the edge back, taking away tons of material.
Another issue with Bark River, is that they tend to polish up their handles till they are shiny and bright. Pretty, bright, shiny micarta looks great, but is very slick in the hand under use. You can find many threads asking how to "fix" the handles so they are not like holding a slippery fish!
