Yes, yes, yes it can be done . . . anything you can do is possible in quilting. I have a special foot for my sewing machine that allows me to thread in cording and ribbons - then using the twin needles I can stitch designs over the top of the cording and ribbons - I have quilt blocks started for a patchwork effect - another of my UFOs that I need to work on!

I can see you doing quilting with stitch in the ditch and then another stitching in perhaps a different color right alongside it. Sweet!