I do prefer the other colours of corian that you've been using. That salt and pepper is especially nice. However, I've been looking long and hard at this one lately. I don't have anything like it. Perhaps I've just been conservative. This is really growing on me. I'm going to mull it over for a few days.
Regarding your sheaths, I think they are well-designed for outdoors use. I find that pouches provide user-friendly retention. It looks like the lower ride would provide easy access to the blade. The tooling is a subtle detail that doesn't distract from your distinctive handles, and I think that is very important. From what I've seen so far, it's your handles that really sets you apart from the crowd. It seems to me like they are something of a trademark.
I'm a little conservative when it comes to EDC. Even though Canadian carry laws are very relaxed when it comes to fixed blades, I like to be discrete. Therefore I prefer high-ride sheaths that keep more of the knife up and out of sight. Maybe I'm wrong, but I think they make knives look smaller and less threatening. For me, that's important.
I think kydex and concealex are great materials, particularly when paired with Tek-Lock clips. I do prefer leather for knives with wood or horn handles. But I think it is very appropriate to match synthetic handles to synthetic sheaths. I'd really like to see you try a concealex sheath for your EDC model.
I'm very interested in your work. I think you're doing some interesting things.