Lifetime US Club Member Access to AA club = YES!
I got the e-mail from US this evening while in the taxi to Sao Paulo airport (GRU). Travelling tonight on United to Washington (IAD), but I decided to skip the United Club and try the Admirals Club in Terminal 2 using my US Airways Club lifetime membership.
The club was not crowded when I arrived. They were very nice, but weren't prepared for my card. They explained that they had been trained and had a lot of information (including pictures of various cards that were permitted and not), but nothing about lifetime members of US Club. They invited me to stay and asked to keep my card while they verified the new rules (which, again, was very nice of them). About an hour later they paged me and gave me back my card. The verdict? Yes, I can come in any time they are open.
I am writing from the AA Club. Certainly a nice change of pace.