Good question, I wondered exactly the same (if I understand you correctly).
Having sharpened a couple of knives I feel ready now to do a convex edge. My Fallkniven A1 has to be in for it. (Though I am not sure it is the best candidate for that: the entire blade has a convex form, rather than just the edge.)
What I understand is that you propose to sharpen the knife to a burr at 17*, then sharpen it to a light burr again at 18*, to a light burr again at 19* and then to a light burr again at 20*. You only use the ceramic stones for a light burr. Finally you do a strop at 17*.
I think that in theory this should work fine. I just haven’t tried it yet.
If anyone has, or has a different view on the theory, I’d be interested to know.
