In the US experimentals have no restrictions at all except against being used for hire (private flight only, essentially, with exceptions granted for training). Europe may have restrictions against night flight but that's a Europe thing. Also some of you are acting like Hill is inventing the factory assist concept which is absurd; it has been around for decades and is well established, at least for FAA compliance. Yes, two week factory assist is common and is very different from actually building from a kit. It is essentially a loophole but a real one. Some owners might fake it, others take it seriously.