Why does nobody mention Stoneskin?

Stoneskin is better than Cure. At 10% of your max HP, Stoneskin should be blocking 450-550 damage. It's more MP efficient than Cure especially at higher health levels and it has no MND dependency. Stoneskin casts just as fast as Cure in this game with zero recast. This isn't FFXI or 1.23.

In situations where you are actually in danger of dying, a WHM will always cast Cure or Regen. You shouldn't need to worry about your Stoneskin overlapping with theirs. Stoneskin stacks with SCH shields too.