When the devilstick is rolling over the right handstick, cross your left handstick to the other side of the devilstick (same side as right handstick), and turn the left hand knuckles down. Then do a rollover on the front side of the left handstick. Next do a rollover on the front side of the right handstick, and bring the left handstick back to the left side. Do a normal rollover on the front side of the left handstick and bring the right handstick to the left side of the devilstick. Roll the devilstick over the front side of the right handstick (knuckles down). Rollover on the left handstick and bring the right handstick back to the normal position.
In the same notation as the Butterfly:
RKUF, LKDF, RKUF, LKUF, RKDF, LKUF, (back to beginning of pattern)