I do love the Camp Knife! I use one every time I am in the woods and not backpacking. I also love the Duke for an all purpose knife! Early this winter, I only carried a Camp Knife on a camping/fishing trip. I cleared limbs to hang my hammock and fly, I prepared fire wood, I dressed trout, I even filleted a trout, just to see if I could, I prepared and cooked dinner, I turned my trout on the open flame, heck, I even used the back edge to pop the top on a beer bottle!
In regard to thicknesses.... I have and use 5/32" tapered and SFT and 3/16" tapered and SFT. All the knives are VERY capable... VERY. Unless you use is as a pry bar, 5/32" would do just about whatever you wanted it for! I do like weight forward in a knife I plan to need power in my swing/chop, so I have to say my favorite is either thickness in tapered. I think I have shavingsharp's flat grind 5/32" Camp Knife, and it is SUPER light, but it is a FANTASTIC knife! As a matter of fact, I think I have used that Camp Knife more then any of my others!
-Will