Hey Mugan...
To be quite honest with you..
Unless it's custom moulded,, it's not going to be up to the job...
Nylon sheaths with kydex liners are going to have enough rentention to hold the knife in place... You will be relying on a strap and snap...
You'll take a Great risk of losing the knife...
I hope that helps...
ttyle
Eric
O/ST