BSB, I was about to post a similar thing - you can get a few seconds worth of zero g in just about any aircraft by, for example, getting speed in a dive, pulling up (30 NU would be ample), then pushing forward to get and maintain zero g - all gentle, smooth and non-aerobatic.
However, as Mr Grollo found out to his discredit, if engines or other systems need positive g to function correctly it is not a smart thing to do in machines that have such limitations.
The pitch and bank limits quoted in the AC are angles reference the aircraft's axes, as opposed to AoA which as we hopefully all know is the angle between the chord line of an aerofoil and the relative airflow.