So I take it N and V aren't much into wearing clothes?
Believe it or not they aren't completely naked, but having tried out various different armour/clothes/armour-clothes, they've pretty much come to the conclusion that they aren't really that necessary. Think Celts, or the barbarians in Solstheim.
They aren't much into full-frontal assaults - (excuse the pun) - so armour isn't strictly speaking high on the agenda. Once you can sneak about and be pretty much invisible it's really not that big a deal...