New to WDH and sway control

bikendan has it right. Actually, you can back up with just about any weight distribution system. However, if you use the friction sway bar, then it's recommended you remove the bar before backing up. When we had an old style Reese hitch, we used the friction sway bar. I never backed with it attached, even if it was just a few feet. I always took the time to take it off. Why? My dealer (at that time I purchased it), said it's possible the reverse motion with the right turn (especially a near jack knife situation), could break the small ball mount on the hitch head (if it got into a bind). So, I followed his advise.

With my Equal-i-zer now, nothing has to be removed.

Friction sway bar: