Sorry it took so long to reply. There is slightly more body roll, but it's not horrendous. It took a little getting used to in order to figure out where it starts to roll and how to compensate for it. I do tend to drive more aggressively than most, so this is probably the only reason I noticed it. On the flip side, there is noticeably more traction on the front wheels. I noticed by accident the other night, that on a freshly rain-soaked road, the back end will break loose a lot easier because of the added traction on the front. Mind you, this is ONLY when I gave it a "little extra" gas. It didn't break out driving as I normally would. The AntiRock system does a really good job keeping the front wheels on the ground!
Scott, welcome to vehicle dynamics 101.
Your actually lucky. You had a front row seat to making a single simple change and got to feel the results. That wouldn't have happen had you installed a complete suspension.
But, and it's a big but, what you felt isn't the front wheels being held to the ground better, you felt the result of the front wheels being held to the ground less, in simple terms. Swapping to the Currie bar lowered your front roll resistance (the combination of coil spring rate+bar rate), which also effected your F&R roll couple % (also known as Roll Couple Distribution). Lowering the front roll resistance is why you felt more body roll, the effect that had on the F&R roll couple % is why the rear end comes out easier. Simply put, it made the Jeep loose by making the rear end handle more weight transfer. Everything effects everything else.
Sway bars, anti roll bars, or just bars, what ever you want to call them, are just springs. They have a spring rate just like a coil spring. Though the bar spring rate is not factored in when figuring out, say, coilover spring rates, because coilover rates are figured for ride and not roll. Rates for sway bars are generally listed as Lbs @ x* of twist. The length of the arm comes into play too to give the final rate.
Mind you, this is ONLY when I gave it a "little extra" gas. It didn't break out driving as I normally would.
What you describe here is snap oversteer and it's not a good thing on the street. Hell, it's not good almost anywhere and it will do it under braking too. The auto manufactures spend millions of dollars tuning vehicles to have a tendency towards understeer, Jeep included. Honestly, if your getting snap oversteer, and you drive it on the street a lot, I'd put the stock bar back on.