All this raises a question. In most pictures of khukuri carried in a sash, the handle is presented to the left hand. Ghorka (and Ghurka) troops carried them on the right hip with butt forward. Absent an unlikely proportion of "lefties," the mechanics of the "draw" are not obvious.
For sash carry -- MAYBE: grasp scabbard with left hand (back of scabbard across meat of hand and handle against wrist); draw scabbard from sash; rotate scabbard 180 degrees, keeping edge of khukuri up and presenting handle to right hand, draw khukuri. Trouble is, elsewhere I have seen opinions that favorite stroke is upwards, and the mechanics described are better for a fast downwards, diagonal stroke, upper right to lower left (wielder's perspective).
For the right hip carry, all I can think is that one rotates the hand inward to draw, but it seems clumsy.