Hi,
Emergency Tactics animation is too long for it be be of practical use in most situations.
Where you would want to use it is if you are recasting Adloquium or Succor on target that already has shield on from previous cast. If trying to do it on a main tank, the animation lock is very long and by the time you finish casting [Emergency Tactics+Adloquium], the previous shield is already gone, so you might have not bothered at all using the ability. Especially if you crit your heal and overheal the tank, which leads to losing healing potency. If you crit with tank near full HP, the extra healing goes into shield and is not wasted, but even beneficial.
The animation speed needs to be as short as Cleric Stance, if not even shorter.

I suspect originally you wanted to make this ability into a toggle converting shields into pure cures, so that SCH can replace WHM in raid/progression parties (making SCH+SCH and SCH+AST almost viable setup), but you gave up on it last moment and introduced this half baked ability.

What changes I want from this ability:
1) Make it a toggle so that Scholar can try to substitute when WHM is not available (WHM will still remain preferred main healer due to giving MND+ party bonus)
2) If you insist on keeping the ability luckluster, I want animation lock removed from the ability and recast timer reduced to 15 seconds. (reduced timer mainly for situations when you end up as SCH+SCH or SCH+AST in duty finder randomly matched parties)

Thank you for reading, looking forward to improvements.