I live very close to Quiltworks and while it's sad they are closing, it's not really a surprise to me. I used to go there occasionally to buy fabric. They were never very friendly or helpful to me. I know others said the same.
Next time you are in Houston, check out Quilter's Crossing on Main St in Tomball. My guild has a lot of functions there. They have a great selection of fabrics, patterns, notions and a wonderful helpful staff. It's my new favorite LQS