Luxon and Kurzicks
Fenrir Brightclaw
Okay, i just found out that the armor i want for my assassin is only available in from kurzicks. But i want to be a luxon. Now i want to know if it's possible to get just a bit more kurzick faction then luxon, and then get the armor, and if it's possible to get more luxon faction so i become luxon then while i still have kurzick armor. And if they won't get mad at me for that 
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Kaguya
Should be possible. Was at Preview event atleast. :]
Thrawn Foxheed
To get to Vasburg Armory you must have completed the quest 'Befriending the Kurzicks' to get another quest which takes you to Eternal grove and eventually to Vasburg Armory where the armor is. As far as I know, the alignment isn't completely permanent, as I had my monk go to HzH first, then switch over to the Luxons, then because i already had 10k Luxon faction and Kurzicks wouldn't sell me anything (bastards ) i went with Luxon.
Sometime later i went back to check out HzH again and the count would still talk to to me and had ! over his head. When talked to I had the option of updating 'Befriending the Kurzicks' so i don't think your choice is final.
Sometime later i went back to check out HzH again and the count would still talk to to me and had ! over his head. When talked to I had the option of updating 'Befriending the Kurzicks' so i don't think your choice is final.