I personally haven't but my DH has. In fact he is setting up one right now. He is just taking yardage of fabric and quilting. He is using the templates that are continuous. We just did a small baby quilt and it turned out pretty good. I did machine embroidery on the quilt and he quilted it in about 30 min. If you had asked me a year ago if my DH would be quilting I would have had to laugh. 38 years and he still surprises me. When I get a pieced quilt done I want to learn. I'm a little more detailed. He has done 2 yardage full size quilts and they look pretty good. I'm just going to put a binding on them, no border.
I don't regret the purchase. Of course we added more as we went along. First we purchased a quality leader set, and then a stitch regulator. Not cheap. But it sure beats having to send a quilt out.
In time we both might be able to call ourselves professional. Ha. One step at a time I'm still learning to do more complicated quilting. The one quilt I want to make before I get too old is The Crown of Thorns by Judy Niemeyer in batiks. That will be my master piece. I should be an advanced quilter by the time I get it made. I better stop I could write a book. I love to talk or type with people who have the same interests I do.