There is a feature on him in the book, "Scottish Hard Bastards" and he also graces the cover. Consensus legit hardman in his prime, still wouldnt wanna take a smack fae the girl: think Jake The Muss in real life
The author says something along the lines of, "a man like Brian comes along once every 1,000 years", been a long time since i read it but its still in the collection.