Okay, here you go Woody:
This is pretty extreme ugly capture conditions from a technical standpoint for noise and LCC correction combined. 43mm Schneider shifted 12mm left, the max lateral shift in the RM3D I am using, shooting into a shady area so we get the max boost from the LCC at the dark corner. This is ISO 400 on the IQ180, and 1/15th at f11 on the lens. Note too that the Sun is just off camera right behind the cabin to the right basically shining on me as I shoot. Even though it isn't visible to the sensor, it is inside the lens' IC and tossing a boatload of light into the camera. That generates a strong flare in the upper LH corner and less in the upper RH corner. Noise is overly significant as I suspected, probably around net ISO 1600 in the corner after LCC boost. I would advise to use ISO 100 max if you plan on shifting -- and obviously, using ISO 35 would be even better. Note I used my standard (slightly warm) outdoor WB for all of these examples and did NOT dropper the passport! In addition to the noise making it unreliable at that small size, I have a bunch of light reflecting in on the passport from trees, dirty deck and parked cars.
Edit note: Since the Sun is shining basically on me and the camera form the front right, the LCC for this frame required the exact same exposure as the image to render a centered histo from the LCC. Using my normal 2 stops over, the LCC was pretty much all high gray.
First we have the un-corrected ugly to show I have the passport in a pretty bad area from an LCC PoV:
Now here is the LCC corrected frame. I am actually surprised (and sort of impressed) the LCC did not try to correct out the flare:
Here is the passport crop after the LCC. As you can see, noise is bad at probably around 1600 or more effective net ISO after LCC boost, and renders the passport basically unusable as a WB tool in that area of the frame. However, the overall saturation remains very respectable to my eyes, and not "killed" by the LCC as we feared it might be:
So I'll go on record with my conclusion:
If you push to the extreme outer limits of the lens IC or use extremely high ISO's with moderate shifts, you may not be satisfied with the LCC result. However, when used in realistic shooting conditions with proper technique for highest image quality, LCC corrects even significant lens and sensor color cast anomalies exceptionally well.