I understand the +30 health on your shield, because your high set focus also has +30 health (giving you the same health while in both sets), but I've never understood the extra +30 health on your shield set weapon (giving you 30 more health in your shield set than your high set).
Tell me, what is the point of having that extra 30hp buffer in your shield set if your energy is at 0 and you can neither cast nor weapon swap into a set that can cast?
If you ever get down into that 30hp buffer in your shield set (in which case your energy will in all likeliness be at 0), there's nothing you can do to save yourself because you can't cast anything with 0 energy and you can't weapon swap without losing that 30hp and killing yourself. All you can do is pray to God that your other monk is super quick on his heels and/or lucky as hell and can save you before you take 1 more hit and die. If this is not that case, then all that 30hp buffer did for you is delay your inevitable death by 1 hit.
Disagree with me if you like, call me crazy if you must, but I always use a +5e/+5AL weapon in my shield set instead of the traditional +5e/+30hp weapon.
This means I'm never in a situation where I'm caught in my shield set with 0 energy to cast and the inability to weapon swap. If I get down to the brink of death, I can quickly swap to my high set and panic cast a WoH instead of just crossing my fingers and hoping for the best.
G

