This was brought up in another thread (whos main purpose was not to talk about this).

I just wanted to raise it once more for Socharis to consider, then will let the dead horse rot.

HES has many applications for Paladins, in and out of combat. Right now the spell is VERY difficult to use because of how short its duration is. I think every paladin in existence would give up its battle cast speed to instead have it lasts for a reasonable amount of time (like every other single stat buff it seems in the game).