I't pretty easy to find adaptions of vanilla armors, but looking for original armors for UNP that look like a thing that an adventurer might wear in real life is proving to be a challenge for me. Just as long as it's something in the heavy or light armor categories that at least covers the vital organs (so the whole front of the torso and the back of the body, some arm and leg skin is okay and not necessarily immersion breaking). That been said, Skyrim is a high fantasy world with magic and enchantments, so I'm okay with the lighter armors looking more like clothing than something made from animal hide on a tanning rack. I've had a browse through the UNP clothing merchant mod that complied 13 or more different mods together http://skyrim.nexusmods.com/mods/24684//? I've found less than 5 outfits which look like something a sane person would go to battle in, and only one of them were a light armor. If in doubt, take a good look at the armor/clothing and ask to yourself "would an idiot wear that into a civil war"? If the answer is yes, then it probably won't meet expectations.
