Nah, you miss the point about what unobtanium offers when alloyed to titanium. It creates a seriously hard edge, one that never, ever needs sharpening. And we don't need no stinkin' weight--all we're going to use it for is to baton wood and behead pesky marmots. Oh, and to look quite cool during happy hour at the hikers' bar.
Tell you what, Josh, send me 4 prototypes. I'll take the pick of the litter and do some serious beta, and send the others on to Roger for austral testing. Who knows, maybe unobtanium performs differently down under. We need to find out, for science.