Quilting with my embroidery machine was one of the reasons I wanted an embroidery machine. 4 years ago, I was still a novice quilter, and just starting with FMQ. Honestly, after spending hours and hours embroidering bath towels for all the nieces and nephews for Christmas, I decided I didn't have the patience to use the embroidery machine to quilt. My FMQ skills have improved dramatically. The thought of hooping, or placing a large quilt EXACTLY in the right place, then keeping it from shifting while it stitching out a 6x9 inch area doesn't appeal to me.
That being said, I know the results can be amazing, if it's your cup of tea, go for it.