....going to the same hub then have them in the same OSPF process?....
Bonus - mixing technologies here. ;-) I was studying this weekend, and I came across an interesting command that I had forgotten about.
ip ospf database-filter all out
Where would we use a command like this? After all, all ospf databases in an Area should match for that area, correct? If this command was used on a neighbor connection, then the neighbor would depend on getting the information from a different source.
Dual connections like this could be a good place -- especially with low-speed connections.
Cisco OSPF Command and Configuration Handbook - by William R. Parkhurst
Just something to think about. Layering technologies.
Hope this helps you expand on your question. Cheers!