Same. They're wonderful for auto throughput and auto safety, that's about it. They don't save much if any space over traditional intersections (Really their space and shape requirements make them fairly prohibitive in any place that isn't already dominated exclusively by motor infrastructure), they create a lot more travel distance for pedestrians and cyclists who have to go around the outside, and they generally don't have any signals for cars to stop for pedestrians and cyclists crossing as they make their way around that long orbit. They're about as effective a solution to our car-centric society as the electric car.