Why would you say the PRE workout period is important to have fast acting protein? the body is not depleted or anything like that which it is POST wo...
Why not a solid meal with slow digesting carbs and protein like oatmeal & eggs (1-2hrs before the wo) for example? why do you see a need for whey BEFORE the WO?
your actually going to benefit more from pre workout whey than post workout whey, dude; if its only one or the other

this is because in intense workouts, like the ones us bodybuilkders do, the body gets about 80% of its energy from amino acid breakdown.
obviously, your not going to supply this amount of amino acids from some kind of meat protein that slowly digests "trickle" like.. you need a high concentration of amino acids in the blood in order to prevent muscle breakdown.. this occurs from whey protein