I wanted to comment on the two hands on the staff thing. One hand on the staff works just fine for techniques where the other end is braced against your back. There is also useful one handed techniques where you hold the staff close to the end with one hand and make long sweeps (do not have a ridged wrist with this). There is also a series of attacks and defenses where one end of the staff is planted in the ground and the other is cupped behind the staff (staff is vertical).