DLVR airpseed sensor parameters?

Looking over at this page in the docs there is a note about the DLVR sensors not needing a the preflight calibrations with ARSPD_SKIP_CAL enabled. Does that mean that ARSPD_OFFSET and ARSPD_RATIO should remain at their default values? Does the sensor need the boot calibration once and then set ARSPD_SKIP_CAL?