My newest Khajiit has been using the DB Shrouded set since he got it, and now I've just gotten the Ancient Shrouded set. Nothing odd untill I put it on. I can wear both the Shrouded Cowl and the Ancient Shrouded Cowl at the same time. This is awesome, since Archery is his primary attack. Has anyone else done this?

Woah, that is weird. Was this a one time thing or can you keep doing it?

It also works with other stuff, I've done it with the Guildmaster's Hood and Krosis' mask.