et succor + succor is very nice in huge AoE fight like a3s. Makes you not have to worry about losing HPS if the shield wasn't absorbed before the next succor.

Et adlo is super niche, a crit is usually a huge overheal, where as if it were a normal adlo the shield would be more effective since it would give more healing overall. I've only ever used it on dRk who have walking dead active.