Knife or Sword?
Meanest knife would be a Bowie style (top edge sharpened) like the Randall Model 1, or that nasty longer Bowie they build - pure fighters. Machetes seem more a sword, by defintion, like the Roman short, which changed history.
So, I vote for custom fighting knifes with laser sights and auto-sharpeners, and to #$*@ with the Romans and Randall. Talk about history - it take five years to get a Randall; you may be history before it arrives.
wb