All I can tell you is this
https://forum.obarun.org/viewtopic.php?id=1350
But before you test it a couple of times don't rely and trust any unsaved work on the functionality of it.
Systemd takes so long to boot and shutdown that it is essential, with s6/66 it is less so.
I don't ever use this so I have no direct experience with it to give any advise. Just try it, or search the forum a bit more for details.