For those who don't know, the faction exotic class items [b]require[/b] you to pledge your allegiance to that particular faction for you to wear said exotic class item. So fair warning to those who plan on changing their allegiance, but run their faction exotic as their main class item (like myself). On top of all this, if you have your faction exotic equipped when you change factions, the armour's defensive stat no longer has an effect on your Light level, essentially giving the item 0 Light. (I went from 319 to 294). On a related note, this is a poor decision on Bungie's part in my opinion. Especially since it doesn't state anywhere that this is in fact the case, and you have to wait a week to change your allegiance.