I have no clue. I mean like CRK with S35VN which is barely different than the S30V it replaced. Or William Henry with ZDP-189. Some custom makers still use 440C. They can't say not to wear out their belts on a $5,000 knife? Stick with production ones though. I don't understand why the top knives do not move with the times. Not that it really matters to me personally. S35VN is good to me. Still I would think he would be losing sales to Spyderco and Benchmade already. Again, I have no clue.