I love it. It works perfectly and is light-years ahead of the XF 1.x equivalent. Adding support for multiple sources is an excellent bonus. I'll admit I had a few hiccups setting it up, but once I figured everything out the only complaint I have is a few possible errors you could handle better.
For example, right now, if you try to install an addon from an XF resource page, but the "download" button links to an off-site source, the plugin dumps a stack trace and just says "oops." It'd be nice to see a coherent error message instead of a stack trace, possibly with the stack trace in a collapsed div for those of us more advanced users who like fiddling with things!