[橫打] 祥輝 H.S.J 直拍橫打

Hi,
Does anyone try the below new design of 直拍 (祥輝 H.S.J 直拍橫打) which claim to have better 力學原理?   Appreciate your usage comment.

http://www.youtube.com/watch?v=-cjcizTr3MI&feature=related

Rgds, Edward