This is a really interesting review of leather skiving/paring knives from around the world by master book binder Jeff Peachey. Included are machines and a few other tools used to thin leather edges.
https://jeffpeachey.com/2017/02/28/an-overview-of-leather-paring-tools/
Phil
Nice article. I did read that a few months back and also found this knife.
https://www.talasonline.com/Rick-Gingher-Paring-Knives
The offset handle sounds like a really good idea but the knife is rather expensive for a hobbyist like me.