I use that spray also for my machine embroidery; it is great stuff! I spray basted a small quilt years ago and then didn't get to it right away--when I pulled it out of the pile years later-it was still layered perfectly and able to be quilted! (Don't wait that long to get this quilt under the needle! lol)
I'm so doing that with my next quilt... when I finally get around to making it!