extra owa virtual directory without creating new site

Hi,

I"d like to duplicate the owa virtual directory, and perform different authentication types on both of them.

eg :
https://mail.mydomain.com/owa : form based authentication
https://mail.mydomain.com/owa2 : windows integrated authentication

Is there a workaround to configure it on the same site without the need to have an extra url / ip address?
So we don't need to add another certificate, change LB settings, ..