I have taken out one whole front of a jacket because I had one of my lamebrained moments and quilted it with the wrong color after the rest of the jacket was done. It was a pain and took forever, but I'm glad I undid and redid it. It came out great in the end.
Susie, I've used those for serger seams and they work great. I'm not sure how they will work for quilting. Let us know.