I've purchased a Kit, and I'm yet to see black choppers flying around.
If anything I think the police would be happy that someone is responsible enough to be testing their pills. Really a dealer/manufactuer would just get the industrial grade chem, and in larger amounts.
For what its worth the E1 Tester is one of my best friends... its saved my arse from shit pills before, and when you post Dangerous pills to pillreports.com your helping others. the red CK problem in Canberra is just one example.