You did line the currtains -- they look beautiful. With those swing arm rods, lining was a good idea.
Yes.. this time I did. The last ones I made for that room I didn't line, and I never liked the looks of them when they were open even tho they had a satin striped back.
I'd rather not have to line tho, as it's twice the work and all that extra measuring. It's nice to have an undercurtain and not have to. But in the summer it's a pain with them blowing in the wind. All they do is pick up dust and pollen..:(