All 10 armor parts were the same piece of armor and had the same protections and styles?
Because of the variability of armor it almost seems like the WO either shouldn't take it or should take all 10 at once. By doing all 10 in a single window the game could point out which item didn't match the rest and could tell you why. It could work the same way that crafting does, with a vertically-scrolling panel on the left and inventory on the right.