The BladeForums.com 2024 Traditional Knife is available! Price is $250 ea (shipped within CONUS).
Order here: https://www.bladeforums.com/help/2024-traditional/
I find leather bulkier but much more comfortable for EDC.
Any blade staining from the leather?
Nope.
But I make sure both knife and leather are quite dry. And ... truth be told ... I do not store my INFI in leather.
I've never had a problem with storing a knife in a vegetable-tanned leather sheath. I usually put a very very thin coat of mineral oil on the blades before they go in... and storing for me only lasts a few months at most I suppose.
Kydex works but for guns and knives leather just appeals more to me comfort and looks wise