The LSD does a pretty job in the rear for now and I dont plan to put one of these lockers in the back. I can imagine it would give a lot of problems on the road and a lot of extra stress on the rear diff. yea, exactly mate the ln106 is as light as a feather by 4wd standards which means it would have problems disengage. If I was going to put a locker in the rear I would definately go for an eaton e-locker.Lokka in the rear can be a good option, depends on the vehicle. The more weight on the rear wheels, the smoother it will work.
I have one in the rear of my troopy and I hardly notice it, but on a light car it won't disengage as easily.