He's doing it that way to grab the back of the sweater with a comfortable palms-up twist of the wrist. If he were to hold the sweater facing forward, he would h

He's doing it that way to grab the back of the sweater with a comfortable palms-up twist of the wrist. If he were to hold the sweater facing forward, he would have to grab the back by twisting the wrist down and toward the body, which is much less comfortable. So, actually, that's a quite interesting technique that may be worth trying.