The reverse band squat is a great tool for many reasons.  It works much like squatting against bands or chains.  One of the best ways to utilize the reverse band method is for a top working set where you want to overload the top, but don't want the strain put on your body in the hole.  It has been utilized best though for lifters newer to gear that have trouble getting to depth.  To do this, take a weight that you feel comfortable with, and add reverse bands.  As you descend the weight will become lighter, really forcing you to keep your form and fight to get down to depth, something you will have to do as you tighten the straps down on your squat suit.  Give them a shot and let us know what you think.