Gen3 hardware/firmware interoperability (i.e. can I flash Xenon's Device OS onto Boron hardware?)

Cool! One question, though. In Using boron as mesh-only device - #6 by ScruffR, you said "without the implementation of the HA feature there is currently no way for a potential gateway device to join an existing network." and I guess I assumed that the statement was still valid. Does that mean that the codebase has matured to allow this now?

Or is adding a Boron to mesh via CLI deactivating the "potential" part of that clause?