Monk Stance Bonus AC doesnt stack.

[Lurzifer]

So heres the thing, while youre in DoS or Stalwart stance, the Bonus to Dodge AC does stack with basically everything, even with same amount Dodge value items. ( For example Tier 2 Stalwart Stance stacks with Epic Grims Bracelet).

When youre in Earthstance the Natural Armor Bonus does not stack with Items like Epic Seal of Earth.

Imo thats a bug since it should work like real Natural Armor like the ship buffs, and not like Item Effect.
Not paying that much AP for a useless stance, if not even the AC stacks -.-

Haek

[Zeruell]

The "real" natural armor bonus is the one bestowed by items/Monk stance/Barkskin/Toughen Construct -- the ship buffs (and the Abishai profane bonus) are the special cases.

I don't see this changing, though it would make Earth stance more attractive, especially with the crit multiplier boost it got a couple updates ago.

[joaofalcao]

There are bonuses that stack while there are some that does not.

Natural armor bonuses does not stack. Never did.

To know more about stacking: http://ddowiki.com/page/Stack