I have both, but haven’t put enough work into them to master them. I keep going back to Procreate or SuperimposeX for layers. Recently I bought Artstudio Pro, which I find more Photoshop like in layout. I do like it, but the Affinity apps probably have more potential.I have the Procreate ebook but it’s a Big Read. I make sure to get the updated version whenever one comes out. Big changes have been happening. The main thing is to check out the “what’s new in this version” info.
By the way, have you checked out the painting potential in Affinity Photo and Affinity Designer? Makes me wonder if Procreate could be surpassed.