For offroad this has a number of advantages that it seems are not commonly understood.
By introducing roll stiffness into the rear, with a swaybar system that is laid out so you do not loose any flex, you are nor forcing more of the suspension forces throught he chassis to the front. The front end now can begin to work in a better balance with the rear..in which every one knows is easy to get to flex. Whats far more impressive and better offroad is a suspension system that works together in balance.
Common assumption tells us that a swaybar will kill flex and we must either use dis-connects or remove altogether if we are to have better offroad performance. Lets pause for a minute and think about the pinnacle of the technical 4x4 scene here in Australia...TUFF TRUCK!
You will be surprised how many teams are using offroad swaybars systems. Sure, they are running dual triangulated four links with hydro steer up front with little to no roll stiffness at front compared to rovers with radius arms up front with bucketloads of roll resistance, but they recognise the advantage of introducing some roll stiffness to their systems...namely the rear. These guys are fully cycling 16-18" shocks with ease.