I used strobing for melee members before IWT to keep them facing me, and still do sometimes for hunters. Melee and hunters break follow when in combat. It also reinstates a follow right after everyone is registered in a new phase. If some of your followers break due to terrain you simply move back toward the followers while pressing the jump button and shortly everyone is together again. When you spam IWT with a melee team they have a tendency to run off into the distance, this can bring them back.

Simply put, if you can't think of a reason to want strobe, then you don't need it. It has it's uses though.