I don't really follow the post-workout nutrition theory's running around today. I go back to the roots of bodybuilding and follow the basics. Did Arnold and the crew have post-workout nutrition? They kept it simple, same as i do. Makes life a lot easier.
5-6 meals, spread out, high in protein. Nitrean is working great for me.
But to answer your question, it won't be as fast as hydro (feel like i'm talking about weed here), but i would think it would be sufficient. As a matter of fact, some new research (this is based of research that i've read from HST's site) after your workout, you're better off with a slow digesting, anti-catabolic protein.