I am in "IOE Guy" over there. I will admit some days are difficult, at best. Day 1 IOE, in and out of the world's busiest airport is a "challenge". However, I have been fortunate that I have never found any newhire to be unsafe. They do pass the same checkride I take ever 6/mo, with the exception of 1 maneuver. The lack of overall enroute IFR experience and handflight skills does show however.