Correct me if I'm wrong, but it looks like you can't just keep going and appending more to the path; the metadata document seems to dictate how parameters are applied to resources in the preceding path.
Never used OData. It just popped into my head when I saw the question.
I had just heard of it. Looks like what I was getting at. Wish APIs were just exposed through some query language. Don't see apparent harm if it's read-only and permission-restricted.