My brother runs an AAM in his, and went through hell and high water to put a parking brake in it. Now it does work phenomenally. But it was a nightmare he said, and has well over 1000$ into it.
Now me, I cut all the ebrake crap off to save weight, going to just use regular ol disk brakes from DIY, and laugh at him. I have no need for a parking brake, as my automatic has a park on it.
I say if thats what you want, dive in. Its a great axle, but brakes, and other parts for it are quite a bit pricey compared to simple old 14bt parts you can get anywhere. And IF there is a strength advantage, its at the best minimal. What you get is more expensive brakes and a parking brake.