Gloves just cut down on wear for your hands. Straps are for holding weight. Certain exercises make using a double overhand grip impossible given the amount of weight. Deads, power shrugs, heavy dynamic pulling for reps. The weight and force of momentum are just too much for double overhand finger strength, momentum and really heavy weight will best the alternate grip also or increase risk of a bicept tear. Plus, certain pulls are necessary to do double overhand.