Yes, but I'm not sure how comfortable a forward grip would be on a Khukuri. Some of them have sharp points on the inside curve, after all.
Personally, I tend to think of it as the equivalent of the old
Bennett's Bend patent, which was a nineteen degree bend in a tool handle to make it easier to swing and hold. Obviously khukuris have a >19 degree bend in the blade, but it does have the advantage of not requiring the user to hyperextend the wrist to cut with the blade closer to horizontal.
Best,
F