In a situation where WAR needs to go into Defiance and use IB for the 20% from IB over Unchained -> 5 stacks -> IB (the latter of which will cost a healer a GCD or a CD) or use Equilibrium, a PLD could stay in SwO and use Sheltron + Tower Shield or a DRK could stay out of Grit and use DA + DM and get nearly the same effect. Also something else to note is that Defiance is still unaffected by healing abilities and WAR still receives slightly less healing per spell. I personally have no qualms with taking SwO off the GCD like Darkside as it would help PLD's ShO DPS/enmity problem and also make Grit/ShO no longer interrupt combos. I don't think making both oGCD like Defiance/Deliverance would be a good idea unless Defiance was altered like mentioned, though.