Update- Friend loved the Kydex sheath. We departed Sat morning for 3 days on the Buffalo River in AR. The edge held amazingly well. Second day of the river trip, around dusk, friend forgets to remove sheath before chopping. I hear a funny thud...a sigh..and a,"..uh, ...Bill....."
Needless to say, the axe survived, the sheath did not.
Lesson learned- Form fitted black Kydex belongs in the hands of those who pay attention. Actually, I think the same can be said for all sharp edged tools. Next time, orange Kydex with reflective tape.