Im not sure I see where that is going to be of any benefit. The lifter is suppose to spin in the bore anyway, the cam lobe is ground with a slight taper to it so that the lifter spins each time it opens. Even if the bottom of the lifter spins, you still have all the same pressures as a normal cam working on the lobe.
The theory behind the shubeck's were that they material on the tip of the lifter was suppose to be literally wear proof on both the cam and the lifter. It was big with the stock eliminator racers because you could run a much more aggressive profile on the cam without the lobe digging into the lifter. But, I know he had many failures with the puck coming off the tip of the lifter and causing major engine failures.
Dont know what kind of engine you are working with, but I have had good luck with the retrofit hydraulic roller cams from Comp and Crane. I have been involved with several small block chrysler builds using them and was very impressed, also just built a blown big block chrysler using them. Had a customer with a 410" SBF buit with a hydraulic roller and it also ran very good.
