You probably mean the anti-sway or stabilizer bar - some people are ahppy with it, but personally I'm not really keen on doing that with a vehicle that sees daily or on highway useage.
Yes - you will get more articulation off road, but that comes at the expense of stability at on road, and if you have the cause to do a quick left/right/left (or vice versa) manouver - maybe someone pulled infront of you on an on ramp, or a child darted out into the street after a ball - you could find yourself in serious trouble.
Sami's are leaf sprung, they may be less impacted than a coil spring Sidekick, but, try it and see.