Access OWA & EAS Using Same DNS Name but Different Auth Methods Using TMG

The title is basically the question.  We're in the process of moving to Exchange 2010 and I'm trying to setup EAS & OWA access through TMG.  We use two different authentication methods for each service (FBA & RADIUS for EAS and FBA & SecurID for OWA) so my question is is it possible to access both services using the same DNS name when I cannot using the same listener (IP & Port) on both rules.

Thanks!