Guy it's a useful method to have under your belt anyway..
I've lived with ACR colour from the beginning, I'm into warmer over colder for WB, I'm a wedding shooter by profession and warmer is more flattering, however that red cast is very annoying. You can try and correct it with a bit of green but it adds a global green cast which just isn't good. I tried the calibrate script back in the days of my 1Ds original but I found that it just made the reds worse. I would look at other options but the bridge/ACR workflow is just too good for me and no one needs 'truly acccurate' colours for wedding photography.