There's a way to do it where you only divide the batting into thirds. That way when you are finished, you can't tell it wasn't quilted the usual way. I posted the technique a couple of times here; will see if I can find an old post. Also, there is a book out by Marti Michell on how to do it. I first read about it in a book by Debra Wagner; haven't seen the other book.
Edit: Here's a link to the Marti Mitchel book, which I haven't read. Haven't been able to find my old post. If someone else doesn't do it, I will post instructions when I have a little more time.
http://www.amazon.com/Martingale-Com...dp/B0016ZY4VO/