I have two MK3 controllers in a 6000 chassis and a campus with 500 APs. Half the APs are on controller 1 and the other half on controller 2. IOS devices and our other devices are able to roam from controller to controller and keep their IPs. The user table shows the users who roamed off their initial controllers as vistors and the original controller shows them away.
I don't think the above is what you are asking but I also have airwave and if you tell me what you need I can run a test and get some screens for you on Monday from the controller/airwave when I am back in the office if my above scenario is what you need to test? JUst need to know what you want to see. Willing to help if I can.