Sorry, I do not speak English, so it's a "google translation"
I quite agree that a test phase is for people with skills in the applications concerned. That said ...
I use Affinity Photo and Designer. I must admit that the absence of books and written documentation in French (excluding French-language forum) is in my opinion very penalizing. Maybe when the "Workbook" - the official guides of Affinity "Photo", "Designate" and later "Publisher" will be translated into French, it will be better! In the meantime, it's very boring.
In any case, congratulations for the pécedentes applications and "publisher" seems very promising.