Weapon swap with a single weapon locks out MTX from second slot.

So this is the scenario. You have 1 main weapon set. You hit the lock option so you can swap between sets depending on the skills. Think Blasphemy just for mapping, and cast on critical just for bossing. You assign CoC to weapon set 1. You assign Blasphemy to weapon set 2. Everything works except your MTX. Weapon skins are locked only to weapon set 1, with no option to add an MTX to weapon set 2. Now you only have your MTX half the time. There is no possible way to put any skin on weapon set 2 so it is stuck to the default look.