For practicing quick-draw extensively, the very best bet is a Jordan holster sewn to a wide stout belt, with tie-down straps to secure the bottom of the holster firmly to your leg. It is best to prep a new quick-draw holster by putting the gun inside of six or seven gallon-size Ziploc bags and sealing each one, then wetting the holster thoroughly in a bucket of warm water with a little soap in it and jamming the gun into the holster to shape it, then letting the holster dry completely. Without the bags, the gun will be a loose fit in the holster. For uniformed police-officers, it does them good to learn how to unsnap the safety strap, which is snapped across the hammer to lock the gun into the holster, as an integral part of the quick-draw, without slowing or stopping the hand in that process. (Do not use a thumb-break safety strap for quick-draw.) A shoe-repair shop can sew a small bent-up piece of sheet metal to the bottom of the tag-end of the safety strap to hold it away from the holster and enable the extended fingers sweeping up the side of the holster to pop the snap on the safety strap so that it will fly up out of the way as the hand draws the gun.