Yes, I have used one, back in the day when home quilters having long arms was unheard of. But it is has some similarities to a Longarm in that the quilt is mounted on the rollers and advanced like on a LA. But you move the frame, and not the machine. And your workspace is limited by the throat space of your machine. And you can use longer pieces of wood if you have a wider quilt, so you are not limited in that aspect, and if you quilt is too big, the throat space on your machine won't accommodate the roll. I found that it did make an nice smooth quilting design and was fun to use on smaller quilts. But I kind of got tired of having to roll it so often because of the small sewing area, so it's now living downstairs - still has a small wall hanging on it waiting to be finished.