I have no idea how many pilots in Oz have PIFR only, but I have to admit that I am more surprised that there have not been more incidents with basic PIFR pilots getting themselves into difficulties. There have been some, but not as many as I expected.
The fact that PIFR's have to declare their endorsements on their flightplans now would support the perception that there have been a few problems.
What bothers me most about starting with a minimum PIFR and then working your way through the endorsements is that you could up - but struggle to get down again!
In 25+ yrs of IFR flying, on two occassions I have arrived at destinations forecast to be CAVOK - and had to fly an approach almost minima to get back on the ground.
Dr 