I got around to downloading Chandler 0.3 this evening. Looks like good progress has been made on the core although it will probably be a while before I really get to dig into it.
Reading Ted Leung's blog inside Chandler I noticed that Ted referenced Robert Scoble's entry about David Allen. He further added that he himself is a fan of David's approach.
There's even a page on the Chandler wiki that talks about the David Allen method as a usage pattern for Chandler.