Can't find the exact article, but after a quick 10 minute search on google, I found a wealth of info disproving the claim that soy is a female's protein and can increase estrogen in males. And I also stumbled across one article that explains why soy protein increases the benefits of other foods because of it's perfect balance of aminos, including high concentrations of bcaas, glutamine, and arginine. Not saying that I use soy, but I wouldn't not use it either if it were in a blended protein that I used.
On point though, I usually have a casein/bcaa cocktail before bed, and another when I wake up to piss in the middle of the night. 20g of protein and 5g bcaas each time. I haven't felt like it causes any excess fat gain and I definitely feel like I am recovering better. Still wake up hungry too, so I think it helps keep my metabolism stoked as well without filling me up.