Can someone offer a quick SPvP breakdown, please?
All rewards and such are for cosmetic purposes yes. Salvage what you dont want and use the mystic forge with the mats. Use your glory to buy salvage chests and such.
Keep in mind you can “deposit collectibles” on PvP skins that then can be accessed by ANY character on your account. So that chain may not be usable by your caster, but you can use it on your warrior.
Access the deposited gear through the PvP Lockers.