SqlAlchemy as a Model

Hello all,

I am new to PyQt and Qt for that matter. After starting into the Rad PyQt book and skipping around a bit I don't
have a clear picture.

Is it possible to directly use SqlAlchemy as a model or must I implement a custom QAbstractTableModel? 

I am moving a Cocoa-Python application to PyQt to be cross platform, and would like to continue to use the
same data access layer.

Regards,
m