Quote Originally Posted by NoctisUmbra View Post
Gear sets are limited in number.
Once you equip something in a gear set it is no longer in your inventory.
You cannot equip the very same item to more than 1 gear set.

Gear sets don't seem to be favoring hear swapping at all. Hopefully we'll remain unable to switch gear when in active mode, and thus especially with the faster paced battle system gear swapping will become very much not worth it.
Dont mages engage in combat now when they cast spells? (Preventing gear swaps)

Not sure if they disengage at end of spell though.