One more vote for this, especially if you are only targeting newer android / iOS, it's liberating to be able to use new CSS/JS and keep it trim and neat. However, there's a lot to be desired in mobile browser space still.

I really hope android browser can mature to the point where the browser wars (think firefox vs Chrome) come to the mobile space.. Geolocation for example there's a huuuge gap between how accurate iOS is compared to android (especially with wifi switched on).

Also, I realize that it's more idiomatic (and reflective of what's really happening) for jQuery mobile to present the user with a waiting spinner, request the content, and then change pages on receiving the content.. But it feels much more responsive to cheat and slide to the next page then present a spinner.. Just a personal nitpick.