Maybe, but having an interlock device is much more restrictive than a fine. Firstly the device must be fitted to your car prior to going to Vic Roads to gain a new licence (as the old is cancelled) and then regularly blowing into the device before it can start and then at regular intervals to keep the motor going.
Monthly reports are to be sent to Vic Roads verifying that you have not attempted to drive whilst having alcohol in your system and complying with the conditions imposed on your new licence.
It's a very restrictive way of driving, much worse then paying fines. We will know soon of the effect as the new legislation was passed by parliament this month and the bill received royal assent only last week. If not the government will get even tougher as they are determined to reduce the road deaths.
Peter.