I watched that video on how to clean a slot red with a skinning knife and used it as an excuse to buy a new knife. I've never had an actual skinning knife before. Well, I haven't cleaned a fish with it, but I helped a buddy clean a doe, and that is one of the finest tools I've ever used---I ordered another one in case I lose one.
I got the Victorinox 6" beef skinner in stainless, and it's a jewel. Good, sharp factory edge and handles like an expensive sports car. Can't wait to try it on some fish.