So I sent Becky in for an annual service and made appropriate noises of unhappiness over the clutch screech when applying full power to pull-away from a stop.
The dealer stripped the whole clutch and belt drive to look for the problem.
From the wear pattern on the bell housing, they identified that it was not perfectly round.
The slight oval was causing the clutch to slip in spots.
The bell housing was replaced.
Schreech gone hopefully permanently.
Just sharing for information.
Safe riding everyone...!