My 2 cents. You did not show the knife, BUT if it has any type of guard I think the retention strap should be as close to the mouth of the sheath as possible. That will keep the knife from riding up. Look at the KaBar sheath with the retention strap high on the handle. The knife comes up as there is nothing to stop it, the person sits down, the bottom of the sheath folds over, and when you sit down you push the point of the knife thru the sheath. I have seen several KaBars being carried that his has happened to, and always felt that is one reason the US Army came out with the policy that you could not jump a knife in a leather sheath. Of course made me mad as I had many jumps with my Ben Hibben or Randal Model 14, and no problems as the retention strap was in the right place. John
PS Nice looking sheath.