Possible to Expose/Sort on Nodereference Taxonomy?

I'm using Resource Conflict to create a room booking application for my site. I can create lists where the booked rooms are sorted by their nodereference taxonomy category, but the more intuitive way to browse room availability is via a calendar interface.

I'd like to be able to expose the nodereference taxonomy filter so that users can see which rooms in a specific facility are booked/available.

I really think it can work, but so far my attempts to have both the calendar arguments and the nodereference/taxonomy arguments don't seem to work.

Any help appreciated!!