Regarding the chisel edge on Naga sword-daos.

[ausjulius]

Originally Posted by Ian

I would add another reason why the single bevel may be preferred to a more traditional saber grind. The single bevel may be easier to maintain and keep sharpened. A file usually can keep a single bevel very sharp with little effort. The V-grind, however, requires a bit more work and skill.

it is much harder to sharpen maintain and use the single beveled blades than a normal double bevel.