If I may expound on japanese style scabbards
The entire art of carrying and using a japanese style blade is in the carrying and drawing of the blade IMHo
While I like modern interpretations of Japanese blades I still believe the best way to carry them is edge up sash/belt carry style
The Japanese did this because it works well
With the blade worn this way a draw cut is such a fun thing to do and a leather sheath if you want to keep fingers just does not work
Kydex will but I'm not a big Kydex fan unless we are talking about wet knives
A modern adaptation that did work well is what Hartsfield did with his lined metal and leather wrapped sheaths or what David Mirabile does with his carbon wrapped wood sheaths
I would personally like to see all Japanese style blades traditional or modern be in some form of an edge up sash/belt style sheath
Not because in anyway an obligation to tradition simple because it works really well