Would you be more excited to purchase a Kibker Hawken kit that is representative of the later time period like the Bridger and Carson rifles, or something earlier like the "ETC" Hawken, "Peterson" Hawken, or "Atchison" Hawken? I hope that Jim's design is unique, just the way the colonial and woodsrunner rifles are, but true to the build features that identify a rifle as a St Louis Hawken. This does not necessarily mean having the same snail type breech bolster, tightly wound scroll guard, and Golcher type lock plate.
Regardless, I'll be excited to get one at some point.
Honestly, I think a fine looking English sporting rifle with checkering on the wrist would excite me more than a Hawken. I want to plank build a Hawken of my own flavor. An English sporting rifle is a much larger undertaking for my skill level and knowledge of the rifle design.