I would say that having a fast absorbing high protein meal post workout is part of your macros and calories. All of your replies are maybes, ifs and buts. Like I said, you could just cover all bases and have a food/product exactly designed for the scenario discussed. Seems like there's more effort in fighting it.
I know it's what I started doing and I started getting better results. I always have a scoop of protein in a shaker bottle in my gym bag. It also keeps me full until I have time to get home and make a proper meal.