Fair, but gorilla arms aren't tied to berserk. They do synergise well, but gorilla arms is the best cyber arm augmentation because you can use it for strength checks. There aren't a lot of these, but there are a fair few in that if you're not going for a strength build, you can push strength (body?) to the point where gorilla arms will get you through most doors. There's probably a guide for that, but I try not to min/max too much.