Cold working destroys steel so no you cant move metal into different shapes without heat and enough heat (red at least) so it will move under the hammer without cracking so what you contemplate would ruin the blades. It is the heat treating of good carbon steel that makes them take and hold an edge and a correctly heat treated carbon steel blade will hold an edge but still be reasonably easy to keep sharp.
For me this is all the curve that a skinning knife should have and the way I worked toward making then since 1968 when I was given an old green river skinner with the big upswept blade to kill a few sheep on the high country station I went when I left school school. Hated the design and that was when I started critical analysis of knife design and working on better (for my use) shapes in both blade and handle for easy and safe use and handling.
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