First of all: Affinity I'm very impressed by the publisher beta. Looks like Affinity will be my next creative suite soon.
One thing I didn't find out yet is how to make a PMS mono colored flyer (or book or …) with mono colored raster images.
I used to do that very simple in ID CC by using bitmap raster images saved as a psd and color the image with a PMS swatch but keeping the frame not colored. (see example)
The 'white' of the image stays in this case transparant and I can play with overlapping images without the need of transparency effects and blending modes.
The result is a light file and safe and easy to print and it looks like vintage screen printing
In Publisher I can make an jpg image K (black) and fill the image with a color PMS swatch.
But …the image frame still have a white and not a needed transparent background
Someone did find out how to do this?