Yup! My pieced and appliqued top and bottom, a layer of thin thermore and the backing is organza. The comforter slides in and out easily and is lighter than a quilt (even just a flannel quilt).

My husband had purchased a really nice, warm comforter before we met but it was ugly, as in black on one side and gray on the other. I bought two high quality light blue cotton king top sheets and made a duvet cover for it. I used the top hems for the bottom of the cover and put buttons and button holes in them to close it up. To keep this heavy comforter from shifting inside the cover, I placed a few ties along the top and down the two long sides. Now, nearly 11 years later, we still sleep comfortably under it every winter. You could probably use the same (or similar) idea to make it reversible without using batting.

Just to add to the 'weight' debate...... Bear in mind that one of the reasons Goose Down is so warm is because of way it traps the air. I certainly notice a difference in loft when I use a heavier, damask cover as opposed to a thinner cotton one. I shake my duvet more with the heavier cover to fluff it back up.

I think it would wind up being very heavy. Remember it is pieced so you have all the extra weight of seams, batting, thread. It all adds up.