And plate armor is usually out of the question, just not quite so obviously. But foil thin shields? The only hang-up is the time it would take an AS to make a man-sized hunk of cuendillar, if they take days and weeks to make a goblet. But if Asha'man could get involved, it's possible. Maybe not feasible for the whole Westland armies, but definitely for some bodyguards for Rand or certain key generals or specialized forces (perhaps the Legion of the Dragon, combine the crossbow crank with shieldman in the front lines.