Question about using stamped rocker arms

I think it's a poor idea for a couple reasons:
1. Stamped rockers flex. If they hold together it will reduce the rpm potential of the cam. I used to use the MP rockers a bit. Years ago they were visibly thicker in cross section and in the pushrod cup from a stock type rocker. They kept the advertising hype but I haven't seen that "thicker" difference in years - the last set being in 2008. That's why I stopped using them and go with sintered iron as a starting level if I need rockers.
2. Any hydraulic lifter will work best with the proper preload. Preload is a function of the correct pushrod length and the rocker. It's much harder to maintain proper preload with a flexing stamped rocker.