Hi,
No, PBR is not officially supported on the ASA.
The only way to achieve something like that is to play around with the NAT. Even though it usually works, as its not officially supported (atleast yet) theres naturally always a risk that it stops working because of some change.
I have tried this for example in a situation where the user had 2 ISP links and wanted one DMZ network to use the other ISP for all outbound connections while the rest used the other ISP.
- Jouni