I’ve downloaded it and looked at it but I don’t currently use it. But that is because CS6 still works. When CS6 fails I shall dump Photoshop. I use it for a bit of layer stuff, panoramas and clever cloning. If Affinity doesn’t do what I want I’ll find a replacement (e.g. for panoramas)
My biggest pain at the moment is that Apple Aperture, which was way ahead of its time, was cruelly and for no visible reason, dropped. I haven’t yet found a replacement.