I remember seeing this vid back when Anthony first posted it. The form used is unorthodox, the stance isn't nearly as wide as most sumo lifters. I gave these a go the other day and they felt amazing. Regular style deads tend to upset my old back injury no matter how good my form is, whilst sumos just have too limited a range of motion to be as effective a muscle building movement. So the form used here seems to be the perfect compromise. Indeed the regular deadlift is often described as a natural movement, when in fact the natural and safe way to pick up heavy items from the floor is much more like the form used here. So I wonder why such form is not seen more regularly, seeing as it appears to be safer, and probably recruits the glutes more.
Anyone have any opinion on this?