That arti life is +2 ac also the main reason to take it. 15 balance is really nice for chrono and lailat tanking as well as epic ma tanking. +2 reflex save is viable for getting me to that point where I don't fall to lailat cometfalls or take any dmg form abishai fire breaths as well as elob blade barriers all of these are extremely important to me. I don't think I am gimping str or con at all I can hold aggro with the strength I have and hit things just fine and I really haven't sacrificed con either I have a 40 con when I tank most dwarves don't have this.
Anyways it's not a build thread here but an item thread I have said I like the hide just not as much as leathers which is fine.