I deleted 'cause I'm not a custom (commercial) maker. I can post here? The second knife is a hippo tusk, water buffalo horn spacers, and some porous elk antler behind the guard. I made it for my dad years ago. I got it back when he passed.
The first one is a blade from a Cold Steel Trailmaster, that I took off the rubber handle, and added some elk antler to. I didn't like the black sheath that it came with, so I painted the way you see it. It's more fitting for my black powder stuff for a sash knife.