I imported a complex vector illustration I did in Ai CS 5 and brought it into Affinity D. I reworked some to the vector parts in Affinity. The original Ai illustration was all flat vector paths with vector shades and hi lights to bring out the form. I really should start using the Affinity tutorials as I've spent a lot of time figuring out how to now build and group my vector work in Ai to open in Affinity that would make it much easier to add pixel layers over the areas I want to paint.
The illustration may be a bit problematic for this share so if you are inclined, check it out on my site: http://ruffmouse.com/ruffmouse_pic_book.html