Is OSCache2.0.2 supported with Hibernate2.1.2 when deployed to clustered Application Servers (for example, Websphere)?

The current Hibernate 2.1.2 docs online in Chapter 12 state that OSCache is not 'cluster safe':
http://www.hibernate.org/hib_docs/reference/html/performance.html#performance-s3

The OSCache2.0.2 docs state that OSCache has support (since 2.0) for Clustered Caches, and provides support for broadcasting stale state changes between cache instances.

http://www.opensymphony.com/oscache/clustering.html

Are the Hibernate docs out of date, or is there some other issue that means that OSCache is not supported for use with Hibernate if used in a cluster?

Thanks,
Kevin Hooke