Nice idea, but I won't hold my breath.  I've been waiting for JB to put out a folder for how many years now?
I have more than a few of his knives, and all were worth the money he got for them.  He made probably one of the best production/utility grade katanas ever to hit the market and I am glad I got one.  
I don't see a huge advantage to the Khukri over his larger battle mistress designs.  The FBM I currently prefer does a rather nice job on limbs and splitting as is, I can't imagine putting a cant in the blade is going to improve it's function that much, but I reckon time will tell.  I suppose once I actually see it on the website my addiction will kick up and I'll have to drop more coin in his pocket.  Otherwise I would have no real need for a khukri with what I already have.
If I need to cut down trees, I use a saw.  Axes, khukris and knives take too long and too much effort.  Besides, that portable chain saw fits in a tin about the size of a shoe polish can and weighs maybe 1/4 lb.  I would much rather tote that in my pack along with a hatchet or khukri than an axe for the places I go.  
_________________________
The ultimate result of shielding men from the effects of folly is to fill the world with fools.
-- Herbert Spencer, English Philosopher (1820-1903)