I had a number of conversations with people about this, and I thought I'd try and pass along the results, in the hope that they might prove useful. I think the conclusion is fairly important to clear communication when using these terms and concepts. So, I went to look at the relevant papers, to see what they said. Under the HS approach, this state is created and deleted in a fully deterministic manner by cooperation among the routers. RSVP takes the SS approach, which regards the reservation state as cached information that is installed and periodically refreshed by the end hosts.
Unused state is timed out by the routers.
In any event, after a certain amount of discussion, I came up with the following framework for discussing state. There may be more, but those are the ones that seem to have come up so far. Existence of the state may or may not be critical to receiving service, that is likely to be a local administrative decision.