Ladder bars..??..

So correct me if I'm wrong but here's the way I see it:
The leaf springs will no longer control rap as in the rear end will no longer twist whatsoever with ladder bars.
The Springs with the slider holders well just go up and down ? No longer controlling any of the wrap? Not sure why I would need sliders in the back of the springs as the double connection would just swing it would seem like?..

I'm guessing right alone with you!
Hoping someone will argue my point-s and put some theory behind it...................

Now that i have said that........axle rap lift, NO.........twist yes from the LF to the RR. aka body role....... is still in the springs and shocks wheel house>!?.????