nice if it ain't broke right?, I like the one-sided bevel on my kiridashi, feels like it would be hard to mess up the ferrule
Are you contacting the flat side or the bevel side on the ferrule face? A common misinterpretation of Japanese single-bevel knives for cutting leather is to match the flat face to the flat side for a flush cut. There's some airplane wing aerodynamics analogy here that I can't quite articulate well, but trimming this way is more likely to result in an inward cut as the knife pushes inwards to what is being cut.
The bevel side facing inwards is supposed to be the way to go, with the bevel being perpendicular to the cutting surface, rather than aiming the knife body to be pointing straight up. The idea here is that the spine of the knife gets a bit out of the way to let you see better down the angle of your cut. Here's a video of it (lots of "incorrect" examples out there as the youtube tutorial craze has picked up for leathercraft in recent years) that's a bit long-winded. It's not the biggest deal and sometimes for a final trim I do use the flat face inside, but for the broad strokes, bevel side inside should be the way to go.
Personally, I find the Japanese leather skiving knife proportions to better suit the purpose than the traditional knife aspect ratio. No wrong way of doing it if the results are good, but that's the tool specifically made for the job.
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