No one knows more about it or speaks more engagingly on the topic than Lisa Fagin Davis. Here is her most recent (very rigorous) discussion of the topic.
@ninetiger@histodons
One expert says no bc of the non-canonical material in this fragment - it overlaps with the Gospel of Thomas also - but I think it's worth more study for sure.
How can we be sure the other stuff wasn't also in Q?
Does anyone know a comprehensive source where I could see all of the fragments of Filocalian lettering from late Rome? (presumably all church inscriptions by Pope Damasus, but surprise me!)