I'm kind of a chicken... I got one package of it at Connecting Threads and was afraid to try it on a quilt that would be used a lot and washed a lot. So, I just used it for wall hangings that mostly, well, just hang there. It worked great! I think it's kind of expensive for a big quilt, and am still wary of it coming apart over time. I like the pellon idea though!
Lucky for me, I decided last year I was going to make a few wall hangings to go in the same spot on my family room all year long. I have made good use of the binding connector stuff! So far I have made, or am working on, these wall hangings with pieced batting: an autumn wreath, a Christmas wreath, (different styles) a snowman, a bunch of wacky bright flowers, a bunch of watermelons, and a halloween thingy.