The support so far has been excellent - I had a small issue related to photo orientation that the developer was quick to respond to. Although the fix to this may take a little time, I am confident it will get addressed in a future release.
Definitely worth the money.
I agree with others that this deserves being a core Joomla component.
Thanks for the great work.
While the extension is tilted towards Drupal, I have detected a strong desire and willingness among the CiviCRM development community to make it more Joomla friendly. In my opinion, the best way to do that would be to make it compatible with JoomlaPack, which would go a long way to solving the installation headaches (use of Foreign Keys in the CiviCRM database seems to prevent this - I don't pretend to understand the details behind this).
If you have the time to configure the installation, it is well worth the effort.