Bellaboo,
Thanks for the link to the tutorial. Years ago when I worked for a Bernina dealer they sent us to a company class where we did a similar method using prequilted fabric on a serger. I made a quilted pillow with a zipper in the back and a ruggle all constructed on the serger.
A nice thing about the Quilt and done technique is that only the top stitching stitches show on the front and it is a good way to use up batting scraps. I think I will try it on my next Linus quilt probably this week.