I used to use a folding knife for all my hunting. I got tired of difficulty cleaning them and have moved to fixed knives. As a gutless skinner I seem to like a long, thin knife over anything smaller or thicker. The long blade gives nice big sweeps and a high thin grind gives great slicing ability. Also if a knife is thin from front to back it allows for de-boning of ribs and quarters when necessary. I am really liking the Phil Wilson Spyderco. The S90V holds an edge and it seems reasonably tough. The skinning sweep is really nice on long cuts and the high flat grind is remarkable.
As for bags I like the TAG bags for the initial back-pack portion of the trip due to their light weight and compactness but there is no doubt that cotton promotes better crusting and drying in normal conditions.
Video of lessons learned.