This will NOT go in a 2 hand piercer. I found out the hard way. I guess an All/All piercing doesnt mean that, it means 1 hand piercing with clases that can use 1 hand piercing. I am a paladin and we only get 2 hand piercing.. so this was a waste of dkp for me.
I petition for them to remove the All/All and change the "Piercing" to "1 Hand Piercing"; not holding my breath.