Okay, we still have issues with this. Now maybe we are doing something wrong here and maybe we need to get some notes on the 'no_image_placeholder' no-image workings.
see attached.
Now I placed our custom 'no_image_placeholder' image in our template overrides, but it seems that it did not quite work. And furthermore, we have not been able to get it to use the 'no_image_placeholder' image in the showcase anyway either.