Q:
Armor Skins and Classes
A:
Nope, you’d have to make a light armor class character to use the phoenix skin at all.
Some item skins are exclusive to X armor type (Light/Medium/Heavy) while others are universal. If you hover over the tooltips it will show you the limitations for each.
“Can only be used by characters who wear X armor”
“Can be used by any race and profession”
“This will replace the appearance of one X armor of any weight class and unlock the skin in your account wardrobe”
Once you purchase a skin it will unlock in your wardrobe allowing you to reuse the same skin at the cost of a (Transmutation Charge) which can be purchased/earned from the Gem Store/BL Chests/Daily Achievements/Map Completion/PvP rewards.