RAT blades are all beefy enough. I took the new RC-6 winter camping 3 weeks ago for the first time. I was excited to try a few things out, especially batoning. I grabbed a few logs from the home pile, which were far larger and harder than any dead fall you would pick up. I was able to consistently split 5" oak without any problem. I hit the exposed 1" near the tip and had to hit the tang occasionally, but it split like a champ. It dulled it some, as would be expected, but I still had a fairly sharp edge after splitting the nights wood. The coating smoothed out a bit, but didn't wear off. I really like the look of it now, after I cleaned it up. The edge came right back with some crock stick sharpening. If you want to chop bigger limbs, eat your Wheaties and prepare for a long and tiring task. There just isn't enough length or mass there to do it efficiently.
After splitting the wood, I tried shaving wood for fuzz sticks again and noticed some loss in the edge, but not that bad. The blade is a little big for good control for that task, but you can choke up a bit on the choil (which the RC-5 lacks).
Regarding the sheath- I felt it rode a bit high on my belt using the parachord as the belt retainer, which is why I like the looks of the RC-5 sheath. Hopefully RAT will have a back accessory soon to let it dangle from the belt. When I took it off, the coyote brown color was hard to find on the winter ground with dead leaves around at dusk. I might wrap some orange paracord around it. The sheath is fully functional, the retention is great, and the molded plastic is really better than I expected.
So- I think the thinner blade is an asset for general camp chores, along with the lighter weight and extra length. 3/16 1095 is plenty. The choil lets you choke up and gain control. My only beef is the sheath, but that is a fun project to solve. That said, The RC-5 looks like a great knife as well, just shorter, thicker, heavier, with a better sheath.
Damn, I think I just talked myself into wanting the RC-5, too. Knivesshipfree had stock last time I looked.