Using CustomPress Taxonomies to filter WooCommerce Products?

I'm using WooCommerce to set up a store to sell comic books and similar products. WooCommerce has Product Categories which work for setting the overall group (Comic Books, Graphic Novels, Manga, etc) but I want users to be able to filter down further within a broad category.

So, Comic Books would have a CustomPress taxonomy called "Publisher" which would have values like Marvel, DC, Image, etc. I'd like to have widgets on the sidebar that does similar and can work with other CP taxonomies (eg Age, Genre, Series/Crossover etc),