I have a number of projects (some commercial, some not) in which both field- and resource-level access are needed. Naturally, it would be nice to use and contribute to an ORM project rather that re-inventing the wheel, but I've not been able to find a project with any kind of access control layer; it seems most of them leave that up to the domain objects, and those classes cannot inherit from a super class.
It may be possible to fork Doctrine--but again, I'd prefer not to dive in solo.