DevForce EF delegates all knowledge of the database to the Entity Framework and the providers supporting it. If MyDirect.Net works with the raw Entity Framework, then it should work with DevForce EF too.
DevForce EF does not address deployment, so smart client deployment in the EF/DEF world is still as frustrating and difficult as ever
. We are planning to target Silverlight clients with a release of DEF later this year; Silverlight should address some of the problems with desktop deployments (while undoubtedly opening a whole new world of challenges).