I'm using it in a production environment. It is still quite buggy. It suffers from the same thing fantastico suffers from - upgrades after "the user has made software changes" doesn't work reliably. It would work best for encrypted software where the user cannot make changes, even then the software needs to be created with the cpaddons limitations in mind. My opinion is that it won't replace Fantastico anytime soon. I have found it handy to offer software not in Fantastico, but I don't offer upgrading of any of the installed software.