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I suppose it could work in a pinch, but in all practicality you'd have to be in that pinch for more than a few months, otherwise a strop and some kind of ash would suffice.

Though it would be nice...

As far as thin hones go, the edge can be damaged by sharp corners (or at least honed unevenly) so a width of an inch or so is about the practical minimum (for me) that a blade can lay perfectly flat...