where is that guy? he is not replying...
oh well, just my 2 cents: to paraphrase Mazda "no animal in nature has square eyes", so their headlights always had shapes resembling animal eyes. Quite interestingly, this was copied by all the other manufacturers since then. Teeth and claws are also never perfectly straight, to be more effective at tearing, holding on to prey, chewing, etc. (think shark here)
These kukhuries are hand-made (Amen to that!), and so will not be as straight and "nice" as the mass-produced, tooled versions of similar knives.
As a bonus, I think that when the edge is not perfectly straight, but rather wavy, it produces a slight splitting effect, while cutting through, thus increasing the depth of cuts. The devil is in the details, and those people had thousands of years to think it through and come up with the khukuri design.
I agree with SweetCostaRica, just use it.