I discovered this recently with 3-swing swords which may be applicable to the 5-swing Cutters.
Essentially if you shield cancel after the first swing of a 3-swing sword then immediately initiate another attack, that attack will be the first swing again but if you attack again right after you'll perform the third swing and skip the second.
So it's like this, in quick succession:
First swing, shield cancel, first swing, third swing.
It might be possible to apply this to the Cutter series as well but I don't have one to test with at the moment.
OMG ITS TRUE ( works with brandish series) someone put this in the swordmaster wiki.