Sorry Vladamyr,
perhaps i didnt explain my thinking properly.
while i did say "opt to not have Sacred Shield up when pulling the boss or tank swapping" i didnt mean dont have it on at all during the fight.
Sacred Shied scales with Vengeance so if you run in with it up before the pull you will want to apply it again soon to take advantage of the increase in absorbs due to vengeance, so i dont see how it could be a bad thing to skip it for the first 5-10 seconds.
on the pull is probably the safest time to go without sacred shield up since all the healers will have already applied h