I have my prototype/first shot at a sheath for my RattleHawk. Its a kydex bottom loader. The retention is interesting. It tilts in and hangs from the beard and the tension is on the spike. You have the pull out the spike then rotate the hawk to get it out of the sheath. So far it seems pretty secure and I am unable to shake it out by holding the spike end and shaking it. So far so good.

I want to test it out a bit before I finish shaping it and smoothing everything out.