I know in the clinic that Macca gave at the Racine F18 NAs, and which is on the CRAW Youtube channel, he mentions he doesn't release the rotator. If the mast can handle it, it makes sense from a flow standpoint, completely releasing the rotator creates a really sharp transition from mast to sail which can't be good for separation.

We don't have a quick release on our boat, and I have definitely had roundings where I didn't release the rotator. Might play around with this during training this spring, would love to have one less thing to worry about during a rounding.