I imagine it will take a few days for all of the reports to come in, but I have seen approx. 200 mAh gain in Coconut Battery since installing it (and without any discharge cycle in between). With 25 cycles, I was down to 95% health; I have returned to 100%+
That update is for the 15" MBP. It says nothing about the 17" MBP in that link.