Surely I am one of the many who have used the above combination of libraries. I decided to make a simple app that used the Cairngorm architecture for RIA, just to get myself up to speed. The end result is below. I faced a couple of problems deploying it to my server, primarily the Security Sandbox error. I did a blog post on that here. I have seen some people asking about this problem on FlexCoders group. Hopefully my post will be helpful to them.
BTW, you can also view the source to see the way I have used Cairngorm.

August 13, 2008 at 8:10 am
Hi,
I am very interrested to see your app, but sadly the link does not work. Could you please advise where I can view the app & source.
November 6, 2008 at 2:57 am
Looking forward to that too.