Welcome to the forums. Although I believe that basic pressure point strikes are effective, I am very skeptical of many of the kyusho multiple touch strikes, not involving one of Bruce Siddle's well known points.
I don't want to be told to "just let someone try it out on you" in order to validate a kyusho strike, since I'm very susceptible to suggestion.
Bill Glasheen and J.D. Morenski did an excellent job testing "Empty Energy" with a double blind test conducted at our annual SummerFest (Camp). This year I am encouraging Bill to try and put together a similar type of test for Kyusho. This will be more difficult, but Bill and I have been working on something that might work.
Is there any possibility that you can join us on Cape Cod for a couple days and work with us on this test? (Aug 9-11)