Not all my reservations made on aa.com allow me to print my receipt from aa.com (the confirming emails do have ticket numbers); so besides checking that SWUs were correctly wait listed TRIPCASE gave me ticket#s and SWU status ALL in one spot^.
PS: I've now used up all 4 of my SWUs, so TRIPCASE is currently not needed for checking SWU wait listing.
This was my reason too. Thanks for all the tips...why does AA make the simple things so hard to do?