You know you've got a good edge when you say, needs to remain in the scabbard as it's too dangerous.

I've seen people cut themselves badly through poor handling techniques.

I bought a friend of mine a SOG key knife like mine for her keyring. It's sharp. I get mine through airport security every time, just looks like a key. Anyway, she used it to cut some cable ties on her desk at work, nearly sliced her finger right off. Dumbass. Lol.

Had she had that katana she might be minus one head.