Im sorry, i forgot to add to the post that i mean in terms of knowledge. Knowledge carry over. I belive if you have the knowledge and skills to hone a razor(setting bevel and everything) you then do have the knowledge to sharpen knives aswell. Ofcourse there are some differences, and the technique is obviously different, but that is only an small part of it, in my view sharpening is 70% knowledge, and the rest 30% is easly obtainble skills in technique, just takes a certain amount of hours practicing.