I have done this twice. Both times when quilting a king size quilt. the first time I was seeing on my original Janome which had a small throat. This was when I had only been quilting for a year or two. I was in Hancock fabrics talking to the gal who was cutting batting for me (for the king quilt) and I was telling her what a challenge it was going to be to get the quilting done and she suggested this method. It was such an "light bulb went on" moment. I was able to successfuly get that beast quilted.
The second time was more recent when I made a new king size quilt to replace the first one. Now I quilt on a Janome with an 11 inch throat, so I definately had more room to work. probably could have just left the batting whole as I did a simple quilt a motif, but a I figured better safe than sorry.
Thank you for sharing the link. Such an amazing quilt and quilter. Loved hearing her story about the meaning behind her award winning quilt.