Has anyone ever tried installing a roller shade at the bottom of the window so you pull it up to the top? (Kind of like the top down/bottom up shades they make) Or, has anyone ever seen any roller shades that are specifically made to hang this way? I want to have privacy at the bottom and light coming in the top, but my window sills are too narrow for the top down/bottom up shades to fit. Thanks for input! Reo