We have all hit this shaft and it seems to work not only for moderate speeds, but faster speeds, too. Every Advanced FittingWorks fitter should have this shaft in their matrix.  You can find an AFW center at:  http://www.titleist.com/find-a-golf-shop/.

Ben Crane has been hitting this shaft since he won with it at the McGladrey Classic.  Several other tour guys have also put this into play since then.