Most of us would probably answer the question "Can a Feruchemist store an attribute while they are asleep?" by saying that they can only store wakefulness and I still have seen that stated post Bands of Mourning but doesn't the scene in the skimmer effectively disprove this? It needs to be lightweight to fly, which is why all the crewmembers need an iron metalmind. Yet according to Marasi, most of the team uses their journey to the temple to get some sleep in. If they couldn't store weight while sleeping, then there really should have been a mention of the skimmer plummeting down by the increase in weight. Obviously that didn't happen. Does anyone have an explanation for that or can we strike that limitation from Feruchemy?