Hello Mat,
Great plugin you have created!
I find only one flaw, even if I do not know whether a fault or I do not know how to fix it.
This is a standard use of plug-in sidebar, in my case I have categories and two levels of subcategories. Everything works fine, but went go into the detailed view of some post – plugin did not display navigation.
I know that for displaying detailed product page using another template and I added the code for sidebar in to it, but plugin did’t shows any menus or submenu its empty.
I guess this will be a problem for other users too, is there any possibility to show navigation on detailed view of post?