I'm about to cut out a sweatshirt for DH. He wants deep pockets which his phone won't fall out of, ideally like a kangaroo pocket but INSIDE. I've drafted a pattern piece for this, but it'll have to be stitched onto the front, obviously, so the stitching line will show on the outside. Is this the only drawback? Should I refuse & make in-seam pockets then put up with the moans about phone falling out? Put velcro on the pocket edge? (Last time I did this the hooked side kept pulling threads when it stuck to the wrong place). I have some very nice marble pattern French Terry which I don't want to mess up. Any suggestions welcome.