I've called that stuff "clirty" ever since an embarrassing discussion on Apartment Therapy where someone had to spell out name for "not quite clean or dirty" clothes to me. I wouldn't want to put them back in the closet, because there is some minimal body oil, etc on them. Even if it isn't enough to be a problem right away, I don't want it to stay there all year. There is no way I'm going to do an end-of-season wash or anything like that, pulling clothes from the closet to wash. I hang them up/put them on their shelves when they are clean. I have enough to remember without a file in my head for "stuff in the closet that isn't quite clean".
My mom always joked about my "clothesline", because I draped this stuff over the (fairly high) footboard of my bed. These days I'm using this guy, but eventually I'll put a row of hooks on a wall.
Where ever it is, I tend to get a little collection going, an on-the-fly mini capsule of whatever is working right then. The tricky part is recognizing when it's time to pull stuff and wash it even though it isn't dirtydirty. I need a prompt like Cardiff Girl's stack falling over. If things stay there all year until the next time their season comes up, I could've just put them back in the closet.
Anchie, I'm curious what your "pull out valet thing" is.