I kind of took the attitude that the old man intended for the canvas to be stiff. I have used it (100s of times) with no effort to "break it in". I didn't wash, bend, scrape or roll it. It is still as stiff and hard as when I got it and I am convinced that it should be that way. I get excellent results with it. I can usually take a freshly honed blade, straight off the stones and improve the HHT with just the Kanyama canvas.
^this
Additionally - I think Mr. Naomi's intention hits the nail on the head.
I had an extremely nice shave off of a near wedge today that I didn't previously have the best of luck with. Difference today is that my stropping included 20 on the Kanoyama canvas, followed by the suede and leather material. Being a canvas newb I thought perhaps it would degrade a delicate jnat finish, but the edge was amazing.