I have one and love it for piecing. I've never tried quilting on it as I have a HandiQuilter Fusion. The number one thing I consider it great for is machine binding. I can line up with the inner edge of the left toe and get a super nice, narrow topstitch for sewing the binding on to the front.
I especially love the knee bar for the presser foot, but I don't think that would come into play with FMQ.