It looks very well designed ... but I seem to be old-fashioned about some things.
I "just don't like" carbide scrapers for sharpening things to a fine knife edge. I like diamond stones because they cut fast and stay flat forever. Or starting with draw-filing and then switching to stones.
I use carbide scrapers and hand-drill grinders for removing metal coarsely and shaping a rough bevel, for example on a lawnmower blade, but for some reason I can't really name, it just "feels right" to finish every edge with light pressure against a fine grit stone, alternating sides so the burr is minimal.
If it can push-cut an heirloom tomato skin without compressing it, it's sharp enough. If you have to slice to get a clean cut ... well, it COULD be sharper.
I could try to rationalize that bias, but I think it is just being suspicious of anything that isn't "my way" after I've perfected "my way" for 20 years or more.
