  We confront the colour glass condensate motivated dipole model
parameterization of Iancu, Itakura and Munier with the available HERA data on
the diffractive structure function F2D3 and with existing dipole model
parameterizations. Reasonably good agreement is found with only two adjustable
parameters. We caution against interpreting the success of the model as
compelling evidence for low-x perturbative saturation dynamics.
