Not sure Chad will respond, but . . .
-
You don’t need powerlifting shoes to accomplish this. All you need is a couple of small barbell plates (or similar) that you put under your heels when you do the squats.
-
This is a common weightlifting technique. Perhaps it accomplishes what you are suggesting. But it also forces better form because there is less of a chance that you will round your back as you lower the weight, as the the weight is slightly forward forcing a more aligned back.
Caution: This technique will allow you to either lift more weight, go deeper into the squat or hang lower longer, including emphasizing the eccentric movement. But, as recently happened to me, it led to knee injury due exactly to this issue (more weight, deeper, slower movement).