I am one of those who tried one in a class at sew expo. I was impressed with it, but the project we made was a simple bag, and the binding attachment was used to sew binding up one side of the bag, continue on the binding fabric to make a strap, then go back down the opposite side of the bag. The ends of the binding were tied in "decorative" knots. I liked it, but my thinking was if using it for quilts, how do you go around the corner of a quilt? That was something the demo did not address at all; in fact it was almost like the instructor deliberately avoided it.