I have been using Affinity Photo for a couple of years now. Not in a professional way, just for some small personal things. Before buying Affinity Photo I used PS for the same purposes for a few years.

I don’t see me going back to PS, since Affinity has everything I need. Sadly, I don’t remember specifics, but a few things work a bit different in Affinity, but the workflow is quite similar.

Note that I am not using the latest version, so things might have changed.