[Inziladun]

It's an interesting idea. I think my main argument against the wights being armoury guards was the fact that the barrows were not primarily armouries. Certainly some weapons were left there as part of burial rituals, and maybe some had been deliberately hidden there by the Dúnedain of Cardolan when they were hiding out in the area. However, would burial places be a likely location to hoard a large number of weapons? Surely there were other stores of them in other places such as Fornost. Would the mere potential of depriving the Dúnedain of a few dozen, or even a few hundred daggers and swords, have been a driving force in the WK's thinking when he sent the wights?