The way I came about my preference for a side wise sheath .
A old gentleman I once knew was an old mountain man, he lived in Colo and WY all his life. He was a horse man of the first class and ran pack trains for hunters and in places like the park and forest service.
He was the best outdoors man I ever met, of course he should have been he was in a tent over 300 days a year out in the mountains.
I noticed his knife one day and the way it was running with his belt and ask him why it was like that.
He explained to me that he used a knife every day and sometimes in a hurry if a mule fell on one of those mountain trails said the knife was easy to get too , and if you fell it wasnt going to come through the bottom of the sheath and go in your leg are falling it wasnt going to hit the ground and the handle drive up and break your ribs.
After years of carrying one this way I dont know why all knife sheaths arent made this way , maybe it is just to much trouble.
Ron