Impressive, although much slower compared to the native one, at least on this (admittedly not stellar) 4300GE machine: the about window takes like 5 seconds to display, and page scrolling is a lot slower. Also caching doesn't seem to work: if I close it and load it again it seems to start the download/compilation process again, which is both a network and resources hog. Didn't wait for it to complete though, so I can't be 100% sure.
Nonetheless an impressive result; I believe we still have to find a killer application for the technology; simply porting native apps to the web, to me beyond the technical accomplishment is the least interesting one, and also dangerous if misused because it encourages the transition to remote applications, which would take away from the users any control on which software they run.
