Been a bit quiet lately so I decided to add a Fillet Knife thread to the BMK Forum. If you haven't had the chance to see and feel one of the BMK fillet knives, well you're just missing something. I've been testing one, a 6" micarta handled fillet around the kitchen for 3 years now. It's getting some really nice patina and still razor sharp. The thin blade and convex grind can't be beat. The second knife just found its way to me this week and it's a beauty dressed with an artifact fossil handle. Both of these knives are about 2011 or so vintage and have Mosher sheathes. Jack's sheathes were solid construction, rivets common, and simple patterns; all classic designs.
Hope you enjoy and let's see more examples if you have them. I spoke with James this year at Blade about a thin flex filet; it's doable and will be done.