It would be more likely, Donato, my pitching the AP-flattened export after I then added it to an already existing multi-layered 'master' in PS. There seems to be some things Affinity Photo does well/does differently than does Photoshop (or Lightroom or onOne Photo Suite for example). And I often tend to go back and finesse things just a bit later when I notice something could be "better" on a file I once was working...
But I'm beginning to find – the more I attempt to experiment with Affinity Photo – how frustrating and time consuming it is to get things done quickly, efficiently. (I'll post later, tomorrow or the next day, on my concerns with the much-touted all-in-one 'High Frequency' filter and likely why I will likely just stick with my standard, admittedly more-complex fall-back process within Photoshop instead.)
For newbies to pixel editing, for those who want to at last move beyond ifoto, I'm thinking Affinity Photo will be a truly wonderful segue, less frustrating transition on their part – ESPECIALLY by way of its terrific and some of the features presented in the short vids on Vimeo. Perhaps one day – when someone takes the time to write comprehensively regarding the 'ins' and 'outs', the 'why's and 'wherefore's involved with this ground-up new pix-ed-app it'll make more sense for those of us who are used to the old school... But interesting and laudable nonetheless me thinks.