The opening of a match is the only time its really much of an advantage at all. It doesn't matter that they can spam it mid match. They still aren't the best ball carriers.
But they are no where near the worst, arguably one of the better ones, if they happen to have full energy. Seen it a lot in WZ lately where the scoundrel will grab the ball, roll up the ramp, roll over the fire pit, then roll beeline to the end zone.