Engenius EAP600 - practical experiences?

I have seen that finally EnGenius EAP600 is supported in the 21 branch. I have been sick of the built-in firmware since long, and wait for a replacement.
I do like the format and hardware, and am not too keen on bricking it.

In a nutshell: Has anyone tried any of the rc-s or snapshots, and found them to be (already) production-ready?