Attached this post is a ZIP file containing the modifications I made to the Microsoft EFQuerySamples project (as of the 8/11/2008 release). I've been using it internally for testing purposes.
Currently there are a couple functions that fail due to SQLite core engine issues, and one or two others that I've fixed in the upcoming 1.0.59.0 release, but largely almost all of the tests pass in SQLite.
The ZIP file should be extracted in the EFQuerySamples folder. App.Config is overwritten and the EFQuerySamples.csproj is also overwritten. I've added the SQLite database to the DB subfolder, and the SSDL file to the Schemas folder.
Robert