Some handling personnell only wait for the beacon light to come off and make a run for it... the smarter guys wait a couple of seconds before approaching the hazardous area's.
I personally wait a bit with switching off the anti coll light until N1 < 10% or so. It's not written in any SOP, learned it from an instructor and I now use it as a GOP (General Operating Procedure), or some might call it 'airmanship'.
(Another example of GOP is retrimming to about 6-5 units during taxi in, while the flaps are travelling up)