Hank's khukri being held by Toni there is a wee thicker than the Blackjack Becker production models, which is quite thin and slicey
the "original" Blackjack Hank model, with the funky grip, where considerable thick, and convexed, more in keeping with the limbu (iirc) style khukri that Hank based his off of. these can be found if you search around long enough. they're quite formidable. HOPEFULLY soon, i can measure one up for specs, but it's obvious in hand, with the Becker model, which one is heavier, thicker, and well, sorry Ethan, more badass
imho, Khukris must have more weight forward, usually accomplished with a thicker spine up there (even 1/4 to 3/8 is better than "sheet steel"), unless the design is "leafy" (foxy folly style); having the cutting edge (sweet spot) forward of the handle does seem to provide more power than a straight machete would otherwise have, but in "thin" you might as well go parang. that whole narrow throat thing really emphasizes the weight forward. imho
there's also an uncommon Blackjack Reinhardt that is "shorter", but if possible, every so slightly thicker. it's convexed as well. only seen a couple of those.
there's also also a even more uncommon Blackjack Chopper, of which i've only seen a handful, but should be "brought back". basically Siegle's Jungle knife does the trick nicely

see:
http://blackjack.0catch.com/pages/marauder.htm