If you are worried about the batting shifting in a tied quilt why not put in a few rows of machine quilting as well. I have freqently done both on a tied quilt and have found using SID down the vertical and across the horizontal seam lines really helps to make sure that the batting is not moving ever! It's your quilt and you can combine techniques. I also sometimes mix hand quilting and machine quilting in the same quilt. It works for me.