I vote for Stationary Casting only, being able to run around while "concentrating the power of the Aether" just doesnt feel right to me.

Taken from ffxiv armoury page Disciples Of Magic, "Its adherents use artifacts and relics to call upon and channel forces within themselves and the aether around them, weaving their destructive and restorative spells in the service of Eorzea."

You should not be able to do things of that magnitude while on the move!