I've read the previous threads, and so far no plans to integrate the Affinity Photo native files. Affinity got an enormous boost when i got presented at the last Apple keynote speech, which triggered my interest.
It's as powerful as Photoshop at a fraction of the price, and works as good on the Mac and on the new iPad Pro. For me a good reason to switch, but for one issue: it can't be read with PM.
Any chance that you folks are working on it? If not, what will it take?