The information that PIP is currently giving out is incorrect.
WAIR have recently hired a direct entry van pilot, with no Delta exp.
An absolute minimum of 1 year on piston before going on to the turbine is also incorrect. Times are changing and people are progressing quickly. Someone I know of spent 6 months on piston before going to turbine, another 8 months.
PIP is correct however in saying there are no twins operating anymore.