I personally don't, but I know many people online who do. It takes years of practice to get consistent results. The reason Dr. Hawkins and his audiences can consistently do calibrations is because of the spiritual energy field emanating from the Doc (similar to those emanating from other spiritual gurus) that, shall we say, "sets up" the conditions necessary for it to work. Those conditions are documented in the appendices of Dr. Hawkins' work, but I'll list some pointers:
1) the intention of the testers/testees with regards to the question at hand must be integrous. This is a biggie, because most "scientific studies" are those trying to either prove or disprove the theory, and by definition the intention behind it is already non-integrous (wanting the outcome to be a certain way). This is why skeptics who try to use it, cannot do so, and they just claim all of it is bunk because they themselves can't do it
Intellectual egotism is pretty rampant all over the world
2) both people must calibrate over 200 (further research shows that for more accurate results, both must be over 480 or so)
This makes it pretty hard for anybody to use it and consistently get results
which is why using scientific studies to "prove" these things is kinda hard. Dr. Hawkins already explained that the basis for the kinesiologic test itself is non-linear and cannot be explained linearly by science.
As for proof, try tracking down one of Dr. Hawkins' lecture videos where he gets the audience to split up into pairs and calibrate things. There is no logical reason why everybody would get the same answer (especially with blind and double-blind tests), yet they still consistently do.