Hey @ruku, we should handle most things you'd need from the cloud. The only thing that's flaky at the moment is using the local cloud to compile. Particle has added a few APIs that we don't support. A workaround is to compile on the Particle cloud and then flash on the local cloud.
@ScruffR , products do work somewhat but have a few caveats. You can see them here
There are a few companies using our fork in production. I think the largest has a few thousand devices connected.
If you run into any problems, feel free to file bugs at github.