I reinstalled the sway bar in my 83 -7 after I installed the OME yj lift springs. It makes a very noticeable difference in the way the jeep handles around town, especially in a left-right-left type swerve maneuver. The only negative as far as ride and handling is offroad articulation, buts its not much trouble to disconnect it if you are going off road. As far as I can tell it has no effect one way or another on ride quality except for controlling body roll.
A jeep is not a sports car, but I tend to drive kind of fast no matter what I am driving

, and the sway bar makes it corner more like a car than an overloaded wheelbarrow.
My 2c.