Must admit that I third the hesitation with the 2-sided quilt for the exact reasons listed above. I've made many t-shirt quilts and quilted them myself on my midarm, and wouldn't do a double-sided one for any amount of money. Pick up a stack of 20 or tees, plop another 7-8 yards of fabric on top of that, plus batting, and you'll find you've got one heavy, thick quilt. Don't use a medium-weight interfacing - it will be waaaay too heavy - probably denim-weight heavy when you stack all those layers.
Some people have no problem with the rubbery, thick logos, but I had nothing but bad luck with them, and only sew around the logos now, not through them. When sewing over the logos the thread broke, tension wacked out, and the needle left huge holes in the logos. Plus, I love the way the logos stand out and become a focal point when they're outlined and not sewn over.
Tell them they only see one side of the quilt when they're laying under it, and make two quilts - they can save one for when they wear out the other! Save yourself the headache. And good luck!
Last edited by cindi; 11-20-2014 at 02:58 AM.