Mine is a Truetrac, it acts like a limited slip, as per instalation instuctions, Final test: Drive on pavment with right side wheel on dirt accelerate. As you accelerate, the wheel with the least traction(right wheel) should spin momentarily. The spinning wheel should then slow down and synchronizw with the oppisite wheel as the Truetrac differential transfers power from the low traction wheel.

Now if I'm understanding this lunchbox thing, it is a unit that installs inside of the case that the ring gear is bolted to.
My Trutrac replaced my entire case.

differential case: A housing, mounted to and driven by the ring gear, which drives the differential spider.

differential Carrier: Component used to mount the differential assembly on the rear axle housing.

So the lunchbox style (Eaton EZ locker) does not pose a threat to the integrity of my factory case? But makes my Jeep very unstable on the street if i don't have locking hubs.
Is this a correct statement?