It all comes down to the way one thinks about their home(PPOR) ie. How much personal and emotional value is placed on it.
Some may see it as just pure equity while at the other end of the scale it may be viewed with emotion ie family ties ect.
Bearing this in mind there could be real dangers if emotion can not be separated from the equation.
The major problem as I understand is that if you have any finance on your PPOR and you then rent it out the taxman won't allow interest payments as deductions as he will argue that the original purpose of the loan on your PPOR was not for "investment or business purposes" Check it out with your accountant.
In regards to this topic you said ...search the archives...
I have tried to find the associated threads but proving rather difficult. Can you point me in the right direction as my Brother and Sister in law have a PPOR that is now rented and need to draw out equity to purchase a PPOR in Brissie due to moving for work commitments.