PIOs are a problem in any type of aircraft.
A recent SETP paper at the flight test safety symposium introduced something we probably inuitively knew, but had never been formally stated - the concept of a boundary being a big driver of PIO.
Milt referred to it in the bit about the Gnat on takeoff - the danger of hitting the runway really concentrates the mind and may drive the PIO.
Takes a very good pilot to get out of a PIO at any - proven by the fact that Milt and others talking about this are here to talk about it.
PIO can happen in many different ways- some pretty strong conjecture that the rudder coming off the AA flight in Newark was due to PIO in the rudder- breakout force of 25 lbs, and 35 lbs to get to max deflection.