The amount of time I spent dealing my heat treat of W2, 15n20, and now z-wear is much more important than the steel choice itself. The hours I've invested in testing and trial and error are countless. Add the geometry supported at different heat treat protocols with the testing required is something new guys don't figure in. Buying x-steel won't tell you how thin you can go at what hardness, at what point will it chip, or at what point it will fail. I have a customer in Florida who uses a 15n20 chef's knife as a line chef, and he swears by it because it holds its edge well, tolerates abuse (yah! go nickel!) and forms a great patina. Heat treat it right for the application with the right geometry, and you are good to go.
I had a conversation with another maker regarding z-wear yesterday. He had a hard time believing I was using 0.003" before sharpening at Rc63/64. If you asked me last year, I would have said it would be delicate. Testing shows it isn't. I know where my limits are with applications and steel/heat treat. It's very important.