I have a few of them;
3x Outdoorsman #6020, 2x Survival #6030, 1x Fisherman #6050, 2x Folding Hunter #6060, 3x Skinner #6070.
I have seen, but haven't owned, the Bowie #6010 and Fisherman Fillet #6040.
The two knives in your picture, the Folding Hunter and Skinner, seem like the most practical styles to me.
A few years ago I walked into a local pawn shop as a man with a cardboard box full of these knives in NIB condition was walking out. The pawn broker must not have offered him much for them. I turned and followed him out to his car and one thing led to another until I bought 7 of the 11 that I currently have for $300. Another reason to have some cash on you or squirreled away in your car so that when cash only opportunities arise, you're not looking for an ATM.