Q:
[Wardrobe] Stacking skins
A:
As the PvP armor items will simply become skin unlocks you will be fine if you have 1 of the items. After the wardrobe comes you will have the skin unlocked and you can transmute as many items to look like that skin as you want (as long as you have the transmutation charges).
Noone knows? A staff member perhaps?
Pretty sure you are free to salvage, aye.
Alright folks, thanks.