The addon for the Pop Up! Plugin has an addon called:
Post Types rules by Ve (Incsub)
I've just found that the "Suppress on Post Types" & "Show on Post Types" rules are working the wrong way around.
If you show on a post type, it's not shown. If you suppress it on a specific post type, it shows!
Anyway it works, but the labels/actions are opposite to what they say they do.