YKW I'm not saying that you cannot pull things off from an overhook position. But in no gi grappling I feel much much safer and in more control with double under hooks. You can show vids all day of over hook throws, they work in the right situations, but wrestling is about control of the center. If you gain the double Under, you gain access to the legs, balance, and their mobility. everyone to there own, but you'll never convince me that a double overhook trumps a double under.