Gizmo and Instant Messaging

While listening to the latest chrispiriloshow, which featured the Gizmo Project via a SIP Call to Michael Robertson, I learned that Gizmo will implement instant messaging. I wonder what that means?! Does that mean they will act like any other internet telephony application and reinvent instant messaging or may it be that the Gizmo Project will act smart as in the past and implement “their instant messaging” using open standards for example [Jabber/XMPP][5]?!

What I really would like to see is a advanced configuration option where I may enter my access data for an existing jabber account on any server…