Your grip should be pretty close to your normal power clean grip. In this type of workout, the difference is more in how long it takes you to actually grip the bar and how high your hips are before pulling. Since the weight/rep scheme of this workout calls for a faster cycle rate, your hands may not be perfectly symmetrical and your hips will probably be a little higher. Hunter is working on reaching for the bar with both hands and immediately cleaning it in this workout, so he's accepting that his reps won't be textbook power cleans and his hands may be slightly off from rep to rep in exchange for speed.