I didn't see this on Maggie's but by Karlun's fort, right where you pretty much start the quest is this guy who is some sort of Viamontian armorer. Anyway, he hands you this note, and asks you go to to (I think) Eastham, to the Shadow Armorer guy who's there. THAT guy gives you a note for the Karlun guy.
So, I did that.
The Viamontian/Karlun guy gave me ANOTHER note, this time for the Shadow Armorer guy in Kara. And one other one for the Gharu Shadow Armorer guy in another city.
The purpose? To find out if they could all be friends. =/
This is all very high school.
But, I ran the quest anyway. Got a few million XP for my trouble.
It looks like next month that you'll be able to make Viamontian Shadow Armor! That, or the four guys will be pretzeled up together a la "Brokeback Mountain."