The BladeForums.com 2024 Traditional Knife is ready to order! See this thread for details:
https://www.bladeforums.com/threads/bladeforums-2024-traditional-knife.2003187/
Price is $300 $250 ea (shipped within CONUS). If you live outside the US, I will contact you after your order for extra shipping charges.
Order here: https://www.bladeforums.com/help/2024-traditional/ - Order as many as you like, we have plenty.
Well, if you are including the whole "system" of kukri, karda and chakma, then any one will be a better survival tool than just about anything else out there. At which point, it becomes "Which one do you like to cart around the most?"
In that vein, mine is my first, a custom 20" CAK. Big and powerful enough to cut down a tree in short order, easy enough to keep sharp enough to cut all but the soft grasses with ease (I use a scandi grind rather than the convex I used to have. It holds up just as well -- so far -- for big wood cutting and makes short work of palmettos, vines and the like). And the Karda on the larger kukris is large enough to be a decent utility knife.
So far as the "all-in-one" khukuri sheath goes, I'd say that the one problem with that approach is that if you lose the sheath, you lose everything.