What is an object store?
One of Chris's comments - "Is this an object store or just an access method?" - raises the issue of what object storage really is. Object stores consist of three things, an access method such as SOAP, a database type file system, and an underlying data integrity method for distributing data over drives and nodes.
To me, we've reached this point by conflating all three, but in reality these are three independent issues, and denial of that is holding back the convergence of the storage industry. We could use SOAP and REST with a standard file system, but it would be clumsy. We do use NFS and CIFS with object stores. A database file system would work as well as a standard file system, and either files or objects could be stored on either RAID or replication.
This conflation began in the 'early days' of object storage, with, for example, the Replicus model. Acknowledging that we have three separate degrees of freedom here will allow us to move ahead on converging NAS and Object. BlockIO will fade away of its own volition, in the way that direct writing to disk, without a file system, faded away.