from the video we get a buff for the time we spend at meditate... it have a 30 second of duration, then maybe is possible to use it in short time for build up 1 stack at the time if the fight ask us to move around a lot, since the cd on meditate is now 1 second... then is possible... but i admit the damage of this skill is really low for a soo long preparation.
outside this the new tsubame gaeshi and hisastsu seinen look insanely good!