Shadow its not just the available LVR that is important, but also the credit procedure, ie how is it to obtain the loan.
I met with someone the otherday at CBA who is reasonably high up and he told me that whilst they might be marketing such products, the pool of eligable borrowers is very very small.
The banks have tighted up their risk criteria significantly.
So there is not much point basing the sustainability of the property market on 97% LVR loans if very few people can obtain the loans.