It's also to do with that fact that when fishing a critically balanced bait, you're taking the weight away from the shank/eye of the hook and making the point the heaviest part - which as you say makes the point naturally point downwards.
It's a rig that looks odd out of the water, but when you get how it works, is pretty clever
wouldnt just 2-3 turns on kk be the same...im yet to understand what the extra turns after the hair do???
As it's generally done with a soft material, that would quite possibly have the same effect! For some reason having that few turns down the shank would make me feel uneasy!