Do Primarchs Wear Backpacks?

Do Primarchs Wear Backpacks? They wouldn’t require implantation – and several of them didn’t wear any form of powered armour anyway (Angron, Fulgrim, Sanguinius etc typically donned bespoke but unpowered armour that suited their history and style). How many Primarch models are there? Let everyone know which of the 18 incredible Primarch models available from