Don't think they need to go through the sim under the PNG regs, just need to get a suitably qualified trainer and FE to do the IPC. When I was with CASA PNG, I done a couple of IPCs for the guys flying it at the time and I must say that I was pretty impressed as the machine had not long gone through a full Garmin EFIS upgrade, great fun aircraft to fly and it was kept in pretty good condition back then, around 2012.