Have flown a lot of ILS with circle to land on opposite runway recently and have noticed confusion from pilots when at VMC(OCA) (CIRCLE TO LAND MINIMA). At minima they instictively want to climb to VFR Circuit height rather than maintain the minima specified for the circling approach. In weather this may take you back into cloud and no longer able to maintain VMC. They state that it feels weird to be flying below normal traffic pattern.
If unable to maintain VMC while circling then initiate the missed approach for the ILS that you flew prior to circling whilst staying within the protected area with runway and turning towards the runway.
That's my understanding and if you break off at normal traffic pattern height there is no point in having a lower circling minima specified and the chances are higher that you will not maintain VMC so what was the point ?