Along these same lines I have seen people advertising that they are 16/16 prot/smiting. How would someone be able to do that when you can only have one rune stack at a time? Maybe I am missing something simple here?
simple 12 protection,12 smiting and 2 headgears one with 3+1 prot and one with 3+1 smitting.The smiter casts his protection enchantments on u while having the prot headgear equipped than equips the smiting headger and casts his smiting enchantments,so u get enchants at 16 prot and 16 smiting.