I've done that. It helps me to remember what order to sew blocks in. It is especially helpful when the quilt is bigger than my design wall.
I am also thinking of using it to figure out what pattern(s) to use for quilting my tops. I think I saw that idea suggested somewhere or heard it in class. Take a picture of the quilt, print it out, and use an plastic overlay (even used a sheet protector as a drawing surface) on top to work on.