The axles will become a weak link with any locker, locked up a locker is a locker, with upgrading the housing and third, it is one of the parts not upgraded yet, LOL. But if you dont push the angles of the driveshafts too much with suspension drop they should do ok.
I know several guys who are locked with aluminum housings and thirds and they have never broken anything and they only drive on logging roads and skid trails, transpo while logging. They are not out pushing/exploring the capabilities though with 29" AT's, LOL.