I don't own a vehicle with a swaybar, it's one of the first things I remove from my 4x4's.
I've taken it off of high mileage stock Trackers and my lifted Tracker didn't come to me with one so I can say I don't see the need for one at all. They drive fine without one. Your springs and struts would have to be so old, worn out, and rusted that they were virtually completely useless to make a difference.