Not sure about the breed, but I'd try to be aware. McMurray gives rare roosters most often, since they can't get people to buy them otherwise. I ordered a batch of 15 hens with plus one bonus rare breed. They gave me an Egyptian Faiyumi rooster. He was the devil. He picked on all the other chickens and hurt them all the time. We didn't want to kill him ourselves so we took him out far into the woods and left him (I know, it's not humane, but it wasn't my idea and I didn't know it happened until later). We thought we had gotten rid of him, but the next morning he was back in our yard. We left him free-ranging the rest of the time we had him. Egyptian Faiyumi are apparently really good survivalists and have a great navigation sense. On Craigslist we put up a very honest description of his behavior for anybody to take him. Somebody took him for a free-ranging flock rooster.
Anyways, just be aware of the possibilities and keep an eye on your chicks to watch for bullies.