If you happen to stumble upon a duty raid with 2 SCH healers you're at a disadvantage compared to any other combination.
SCH / SCH - overwrites one another's shielding and can only turn those shields into additional healing at a limited basis.
SCH / AST - AST can switch stances so their shields don't overwrite.
SCH / WHM - No overwriting here either with shields and regen.
WHM / AST - AST can work with WHM in either stance effectively.
WHM / WHM - Stack regen.
AST / AST - For reasons similar to the above.
So why is SCH the only healer that can't play nice with itself? I always feel bad as a SCH when I am in a group with another SCH. It is true you can switch shields to additional heals thus helping you mitigate any overriding of shielding (or having yours cancel out) but that's limited.
Part of me wants to say if a shield is already on a character when another shield skill is cast it could automatically become a weak regen instead?
What do you think?