They are just test files for a specific user who had problems with the standard switch_e2b.exe. He found that on one system it gave errors and would not show any drives, but we found that it was due to the self-extracting exe package used. So these TEST examples are just packaged using different SE tools. If WinRar or SFX is used then it worked on his system (but those exe files give loads of false positives on antivirus packages). The standard download and the pacquet version did not work on his system but dont give loads of AV warnings.