On the engine that is in my Dart which has aluminum heads and solid roller lifter cam with 256I/262E @.050 .668 lift, I did a lot of experimenting with valve lash. I found that I got a more consistent valve lash hot and cold if i adjusted the valves cold. The Bullet cam card called for .018 IN .020 EX lash, I adjust them to .012 IN .014 EX with the EO/IC method cold and they always come out on the money cold and hot.
Back when I was running a W2 headed engine with a Mopar Perf. 590 solid cam I tried both methods in the Mopar books the 4 position and 8 position valve lash settings and the engine always sounded like it had a few valves louder than the rest. Check the valve lash setting from the 4 and 8 position settings to the EO/IC method and those lash settings were all over the place. So now I only do the valve lash cold with the EO/IC method to get the most consistent valve lash on my engines.