Roll overs aren't as easy for me, wider, and longer than most. That helps a lot. Suspension, is another key, stiff enough to not let you roll so easy and keep the tires on the ground, and soft enough to keep you from rolling for lack of flex. Side rolls for me tend to be easy, no damage. End over end, different story, thats why my jeep is stretched.
As Ron said, but in different words. You know it when the suction is so great on your seat, there is little need for a belt!
Last time I endo, I had time to tell the passenger to hold on, we're going over, and we did, two times.