I would LOVE to be able to use a tag to match the %scategory% tag used by this plugin: http://wordpress.org/extend/plugins/scategory-permalink/
Is there any way to do that?
What his plugin does is make my post's permalink category be one that is selected using his plugin.
The problem with your %post_category% tag is that is only picks the first category...which is not necessarily the category I want an image in.
Any chance you could talk to that author and see if you can incorporate his %scategory% tag into your tag list?