I like social media for seeing interesting knives. One design thing that I've seen more than once that's curious showed up again today. Is there a function for what looks like a sharpening choil that's on the backside of the ricasso away from the edge? It's too small to be a "finger choil", and it really looks kinda like a misplaced sharpening choil. Is it functional somehow as a place for a strap to hold this knife in a sheath? I think I've seen this design more than once and always wondered what the deal was...