In Bloodmoon, yeah, calling it that made sense because we'd just come from Morrowind, where we needed a way of saying "this armour isn't from around here". But in Dragonborn, we've just literally spent the last year playing in Skyrim. A place where everything is Nordic. The distinction comes off as more than a little jarring now.
It's obviously not the same armour that other Nords use, over on the mainland, so why not just call it Skaal armour?