I am also considering these as a future mod. I wheel with many guys that have the anti rock. Some front only, some front and rear.
From talking to them and reading about them, my impression is that they will give you un-matched performance off road, but not as nice of a ride on road. So if daily driving is a big concern, this should be a consideration.
The guys that I wheel with say it's 'not that bad' on road and that you will get used to it. Just more body roll, especially when turning.
One alternative I am considering is the ORO dual rate sway bar. It has a setting for off road and another setting for on road that will be close to stock (on road). It seems somewhat rare though, I've never wheeled with anyone that has it.
Since mine will stop being my DD when it's paid off in 3 years, I might just wait until then to get the anti-rock. I have lots of other expensive mods I want to get done first.