Heh. With the reverse cut front 8", I broke my carrier before the axles or birfs let go. But then that was the "2 pinion" open version rather than the "4 pinion" locker version. The Aussies told me the the 4 pinion was a lot stronger. But few would argue that when you upgrade one component, you simply move the breakage to the next weaker component.
I was chatting with Jerry Nichols, and he was building a rig for a customer with chromoly axles and longfields, but warn locking hubs. I was astonisished until I heard the reasoning, that the hubs become the "fuse" and since they are so accessible they are much easier to fix in the field. Made sense to me.