The current set of patch notes says the SS2 is only usable outside of battle. I find this to be problematic because it is essentially a useless spell while in combat because it cannot be cast. All other abilities for battle jobs are able to be used in battle to some extent, so the foundation of this spell makes no logical sense to have. It is evident in the design that this spell was not meant to be used over and over in battle, hence not being able to use in battle. However the fact that it can only be used outside of battle is a design flaw and is counter-intuitive to what a battle class/job is supposed to be.
In order to eliminate this problem, but to also adhere to the idea the it should not be overused in battle I would suggest that the spell be given a long recast timer or to add an ability that would make any spell an AOE spell, as was used in 1.0. I would welcome any type of work-around for this spell in order to incorporate the use of it during battle.