I have the same set up. They did get slightly softer over time, but don't expect any huge difference. In CT the roads are pretty bad and people in the back seats seem to have a much harsher ride. When I'm at school in NC the roads are a lot better and no one really complains about the ride there, so it's pretty much just potholes that make it too rough.
Overall I think the rougher ride is worth it for the big reduction in body roll.