It works out of the box. It instantly detect the user agent and reroute to appropriate theme.
The mobile theme sample is simple enough to follow so I can make my own mobile theme that matched my desktop theme.
Problem though, in Windows Phone's IE9, it still rendered as desktop (I'm still using ver 1.0 though. I've just update it to ver 1.1 but has not test it yet).

EDIT: Confirm, it's now support Windows Phone's IE9. Great job, sir :)

This is exactly what I have been looking for! A nice way to switch between my site and a mobile site, because other scripts never worked for me (not even on a regular website). Works like a charm on my BlackBerry, when none of the other scripts did.
I HAVE to give it 5 stars! It's a must-have, and free!

I was excited to see an official package for mobile theme switching, but was quickly disappointed to discover that full-page caching is not supported. In other words if you have full-page caching enabled for your site once a page is cached themes will not switch based on HTTP_USER_AGENT because that logic is being bypassed.

How about a real solution that can be used in a production environment? Maybe even include the ability to use m.site.com to force the use of a mobile theme.

Maybe I'll just do this myself sometime. Probably the most frustrating thing in C5 for me.

Nice!

The module works great out of the box, except it does not detect windows phone 7 browsers. It's an easy issue to fix with a little direction. 4 stars. Great add on, but need some minor work in the detection department.