[Zope-dev] New-style classes and Persistence?

What's the latest word on mixing new-style classes and Persistence? I'm finding type subclassing to be extremely useful in PythonLibraries, but so far I'm only using them for non-persistent objects. For part of what I'm doing, though, it would be nice to be able to chuck the old PersistentList and PersistentMap, and replace them with actual list and map subclasses. As far as I know, trying to mix them *directly* is a no-no, but is there any problem with making a new-style class instance an attribute of a Persistent ExtensionClass? Cheers, Evan @ 4-am