Invictica- I'm not sure. I've heard Justin Harris say that as long as the WMS is in a 3:1 ratio it'll be fine. I'm not sure of the molecular weights of concentrate, isolate and hydroslate. I would imagine that isolate and hydroslate would have a very similar molecular weight though. In theory, Hyrdoslate would digest quicker than concentrate, being absorbed quicker.
This is all based on the fact that hydroslate goes through minimal digestion in the stomach (b/c it is partially digested previously) and gets finished up digesting/absorbing in the small intestine. However, I think this whole process is pretty much independent (technically) of osmostic pressures.
Waxy Maize Starch will get pulled through the stomach because of its low osmolality, not because its digested'ness (new word). Im ranting, but I think what I'm saying is, Hyrdoslate, although quicker digested/absorbed still has to take its time pooling in the stomach for a while until released into the Small Intestine. Waxy Maize Starch works its way to the Small Intestine.
So, either choice concentrate or hydroslate, will not be able to "keep up" with WMS. Point being, it won't matter which one you choose.
IMO, there would be no difference (muscle recovery/results wise) choosing any combination of whey with any combination of carb (WMS, Dextrose, Maltodextrin, Lactose, w.e ect..). When it comes down to it, we're talking about a difference of less than an hour of absorbtion time, maybe less than 30 mins.
pasteee- That PWO shake would be fine.