Some times I'll use mine when the road is wet and I need to pull out quickly into traffic from a side street... puts the power to the road, instead of spinning one tire and feathering the gas pedal, and the damp surface allows the inside rear wheel to slip as needed and away it goes.

Accelerating through about 20-25 mph, the locker disengages and I push the locker button back in keep it disengaged... Wish it had a limited slip differential along with the locker.