Use it to heal yourself by knocking down chasing enemy with ranged attack lol
It worked against Trap in Kaneki sometimes so it will probably work sometimes.

I don't see its particular use in offensive action because its ranged attack damage is so low and also knocking down makes enemy temporarily un-vulnerable.

CCG Tanker build worked better with Ukaku<Leap> than Ukaku because it has to have a way to survive when HP is too low as it is tanking build. Ukaku didn't make me successfully run