I have watched escrima, akido and the gracie brothers fight and took all the instruction I could afford on uncle sugars dime (yer tax dollars thank yew very much) and after many years I decided upon a few select tools and they were a 1911A1, an M1A, an E-tool w/ razor sharp edges, a Randall Number 14 (More of a demo EOD tool in my case), and a toy I carried around the world a few times.........
a triangular spike with a 12 inch blade and custom grip made from micarta that I had checkered with a very deep and agressive pattern. My "spike" was a very sharp point and smooth serrations were cut into the edges. I used a wheel that knifemakers use to grind such serrations in their designs. The serrations were not so agressive that they "caught on clothing or "bone" and it was thick enough at the base that it did massive damage. I tried to emulate the old WWI trench knife without the brass knuckles yet all the durability to probe for UXO or a vital organ.
I used it more for UXO than pig stickin over my career...lots more. I did get to try it on a fresh pig carcas once that was being prepped for a BBQ........it would have filled the task of deep fast thrusting wounds quite nicely. Happliy I always had enough ammo to never get into a knife fight .......
Ya'll Stay safe !
True confession time. I have spend over twenty years as a machinist and I don't know how to sharpen a knife. No patience I guess. I usually get to certain degree and that's it. No shaving the hair off my arm. No paper slicing. I have no idea why I haven't learned.
My pat answer has always been that I don't like knives. I can't unload them.