Well, Matt, I am not surprised they are silent. First of all they had company holidays. Second I also often do not know what to answer you, since your questions usually contain "your" answer, so maybe that was why they answered that is "does not work" :- ))
Actually it does and I wrote you in mail why you _I think_ you what you got, because I know our way of flight, while they do not have any clue what you do :- )))
So I will write it also here,
Spin DOES store maximal current. However that current is based on "some" resistance inside the ESC, so you cannot expect 0.5% precision. The current is measured really as MAXIMAL current, not as maximum from flight. It means Spin stores that current in case that ESC runs for some time for full throttle, and that is something we do not do normally since we have governor which should not go to maximal throttle.
RPM is also measured and stored. You wrote me that it was larger than maximum set in ESC, I wrote you that there is PID which can have overshooting. Plus MAX and MIN has some "atomization" so it can easily be that real max during work is some % more than what you set as parameter.
It works to some extent, but it is not mentioned to measuring device, it is tool for troubleshooting, not for power analyze.
I am happy that they make those ESCs for us (only for us) as they make money on something else than C/L flyers and currently I am waiting for new box (because they have really lot of work after holidays), so I am not surprise about answer "forget it, does not work" or simply silent :- ))))))