Nope... might be okay if the square part in the middle didn't have the extra spaces at the corners removed but it seems to me that this gives less "bite" on the screw by the driver. I do like the added torque of the outer "slots" but I think a combination of Robertson and Philips, which is what the Pozidriv is, without the spaces at the corners would work better.

Granted, I have NEVER used a Posidrive, so that's just a guess. But, I like my Robertsons because the driver holds the screw well... does the Posidrive do that too? What I mean is, I can "stick" a Robertson on the driver and it stays there while I negotiate getting it into where it's supposed to go without having to hold the screw.