Configure ASA Remote Access VPN for 2nd public interface

[mcmurphytoo]

  Our ASA 5510 was configured with a public interface, a DMZ interface, and a private interface.  I have a remote access VPN using AnyConnect client and LDAP authentication for Active Directory.  We are changing ISP (groan!), which means all new public IP addresses.  The new circuit is installed, so I have a second public interface (same security level as the first public interface, wholly different IP address range) enabled on the ASA.  I hope to transition whatever I can, which means get the VPN access through either public interface.  Can I just enable client access on the second public interface at the Anyconnect Connection Profiles tab in ASDM?  That seems too simple.  Can they share the one address pool?                       

[mcmurphytoo]

To tack on thoughts from my further research, it looks like maybe a no.  Traffic from remote access client arrives from a random public IP address, so traffic back to the client must take the default route.  That would rule out making both interfaces available for remote access.  If that's right, I can't move the Remote access work from old to new interface as one transition step.  That will have to wait for the ISP cutover, when the default route will change from old to new interface.  Any other thoughts?