Can a SharePoint 2010 server with Office Web Apps interoperate with our SharePoint 2007 farm?

view full story

http://serverfault.com – My company isn't ready to migrate SP2007 to SP2010 yet (don't ask). But we need to get Office Web Apps working for some users. Is this at all possible without migrating the whole farm? e.g. can an SP2010 server share the database of the SP2007 farm? We don't need all SharePoint functionality, just Office Web Apps. (HowTos)