I’m currently installing it. I will report soon 
If others already use it though, I’m interested to know as well.
First Report
Installation goes well. I tried to create a new topic and turned it into a collaborative editor using the topic menu option in the wrench. It worked. Then I invited my companion to join the topic and edit. But here there’s a bug: as she started editing, the existing content of the pad disappeared. I tried to edit as well, but our edits would cancel each other.
I’ve seen this with early Etherpad Lite where the pointer would flicker as other people would edit, jumping from your line to their line. I guess something similar is happening here, that the pointers are not handled well. @gdpelican did you encounter this bug?
Note that I have the Embed Etherpad Lite pads into Discourse plugin installed as well, so they might be conflicting.
Interestingly, although the content was removed from the editor, it didn’t save.