Rails and db4o

Hi!

There’s a project for porting db4o (it’s an open source object
database) to Ruby called db4ro (http://developer.db4o.com/
ProjectSpaces/view.aspx/Tools_And_Add-Ons/
Language_Bindings_or_Implementations). I wonder whether this could be
a nice addition to Rails or ActiveRecord is more than enough.
What do you think? Has anyone tried db4o?

Best regards and thanks for your input.

gerpux