Trick Flow heads on 5.9 Magnum block

Bobzilla said
DrEamer; the cams are different but you can run a cam drilled for LA oiling in a Magnum block with no problems.
With the rocker arms that Toluene56 posted in pictures, you could even run LA heads with shafts on a Magnum block that is not drilled for LA oiling, or on either block with a cam that is not LA drilled, or any combination of block and cam that has the cam bearings installed rotated to block off oiling to the heads.
The other questions is, has anyone run these rockers without normal oil feed through the cam and block, oiling ONLY through the lifters and pushrods? How is the durability?

Thanks, since I have a early Magnum block I could go either way. It just seems like a good idea to stay with the LA oiling cam just to be safe on the side for the shaft rockers for now. Until some runs the Comps for a long enough time to prove differently, I will stay with something I know works. I guess the other question is there enough oil using a Magnum cam to feed a shaft rocker engine?