I am not going to comment on the quilting or piecing of the quilt as I am still too much of a newbie. I just want to say that I really like the quilt and the pics of the whole quilt are beautiful. Kudos to you for taking on a challenging pattern and fabrics. I hope you feel like you have gained from the experience. I feel like the other quilt shop should get a little "shame on you" for not giving specifics and letting your client feel like there is a structural problem. If I were you I would contact the other shop and find out exactly what they were talking about so you can address the issues if need be and help your customer feel the quilt will stand the test of time. I hope if you don't benefit financially from this quilt you will have gained knowledge to use in your future quilting endeavors, so all is not lost. Good luck to you.