This is my first attempt at it, it seems to work and looks relatively nice aswell.
Current install is trough CWM as flashable zip which installs it under /system/media/bootanimation.zip
zip size: 18.8MB
minimal animation length: 13s
The animations are a custom mix of 2 different animations by medi-dadu @ DevianArt
Rigging mixing and other animation is done by me.
Download mirror: uploaded.net