I agree with the "once is enough" comments. For me I quilt for the pleasure of it. Interacting with the LAer should be as enjoyable as the rest of the process. The snarky attitude would be enough to keep me from going back.
SewNso: I just finished a quilt that I used burgundy on the top and a sage green on the bottom. My machine has a well balanced stitch but when you are free motioning the operator makes a difference. In short the results were okay but I would never use different colors on a solid background again, I just am not that perfect. A printed background would have made a huge differance. Lesson learned.