Progress is underway to add support for both messaging and display of gamercard information within the XBL Status program.  There are two branches on the Launchpad page Рone for each planned feature.  Once stable, they will be combined into the main development branch.

Current development: https://code.launchpad.net/xblstatus

Screenshots

I apologize for the lack of window borders, but I can never seem to take proper screenshots with Compiz enabled.