Well you said afci in the title then wrote gfci. IMO I would not use multiwire branch circuit for afci or gfci however it will work as long as the panel manufacturer makes a breaker suitable for the install. Not all of them do.
+1They work but when one circuit goes out so does the other and it makes it harder to troubleshoot. I would avoid doing it
They work but when one circuit goes out so does the other and it makes it harder to troubleshoot. I would avoid doing it
what he said, several times over.
when the stupid thing becomes problematic, do
you want two plug circuits dead?