FollowUp-Moonbeam-Focus-FollowUp-Slash-Focus. It's how you get low 1 minute times with a claws/bio scrapper.
FollowUp is sort of necessary to get the most out of claws performance. Also, that is a really weird statement to say in this thread, where DPS > All. I can definitely see utilizing FU can be useless for some playstyles. FollowUp gives +tohit! "Can't hit, can't crit". Tohit directly subtracts from a thing's defense. It's 1:1.