There are a few different methods of QAYG, and I think a person has to try of them to see if each method is suitable for their purpose. Some methods are more suitable than others for certain patterns. I have done several quilts using the method on the Welsh quilter's site. I think that same method has been presented here as a tutorial.
Sometimes I quilt the normal way except for attaching the borders using QAYG. Just not having the borders in the main sandwich helps reduce a little of the weight and bulk.