User blog comment:Blood Reaper/Skyrim Dragon Armor/@comment-68.149.186.43-20111108032352

I don't think there would be any mention of "improving armour twice as much" if there was no way to acquire Dragon Armour w/o this perk. If one couldn't acquire, and improve, Dragon armour w/o this perk, there would be no sense in mentioning "...twice as much".