That being said, I have theorized many a time that the whole reason guys dig Jnat edges and coticle edges is simply because they are not ultra-refined. A slightly larger grit size than the 0.1um will not refine the edge to such a degree that is will lack self-support. I find a pretty good stopping point for me is about 1um.
The typical "hazy" finish of a Jnat itself would seem to indicate a >1um or so particle size is grinding around on there. And so it will abrade off that last hairy bit of the edge. I prefer to do that via a pasted strop, but the end result may be more similar than not.