The FCTM says not recommended rather than forbidden, as long as there is guidance on how the ARM function works then I don't see a problem. I fly for an airline that regularly uses this to provide low speed protection, however, we recommend not using it in gusty conditions because of the increased risk of it activating.
Can't speak for Australia but in Europe an NTO is no longer needed, as long as a risk assessment has been carried out then this will suffice.