I didn't mean to imply you should have a warning, just that it would be difficult to do here. Too much traffic during the day, too many drunks at night.
Difficult, nay impossible unless you have a runway or closed track. I don't think that needs to be stated and restated.
I'm not doubting what the process is (though I would love to see some VW tech docs regarding it), the whole point of "calibration" is that the computer is going to reset pressures, clearances and tolerances based on the actual status and condition of the gearbox. That's more of a response to your questioning why APR isn't including this as part of the TCU tune.
I suppose it'd be beneficial if you did this calibration on a dyno at your tuner's shop when needed, though it shouldn't be needed often like A3SBQ has said.