Sure, but the only reason I know anything about the SE container is because I know about ALR's original prototype for it from several years ago. I actually had no idea it finally got built, and much less that it is in use in the SE tests for CDI TCK until I dug around that documentation. There's also no documentation on the arquillian website that explains how to use the SE container, which leads to an implicit licensing issue since you basically have to take the code from the RI to run the TCK.