I have heard of all those ways to attach gauntlets. My first set I hinged the outside seam with canvas, and used velcro to attach the inner seam. It worked OK, but I think the bigger problem was that my gauntlets didn't fit right. My second set has a hinge on the inner seam (ala Jango) and the outside seam closes with magnets (and a little bit of velcro on the left gaunt/ the flamethrower is just too heavy for the magnets sometimes). I have also heard of a lacing system, and using picture hooks that go into tiny holes. I have also always wanted to try elastic. With the way elastic stretches, you would have to do overlapping strips and glue in the edges. All you would do to put them on is just slip them over your gloves, and you're ready to go! Good Luck.
Ryan