Well, any instructor or examiner who doesn't focus on look-out during training wants sacking, but it is mainly post PPL where people get into bad habits I suppose. I teach sensible GPS use where I can during training courses - despite the urban myths (mainly perpetuated by those who aren't instructors or in the training business) there is nothing stopping GPS use during training, but students do have to learn and demonstrate the basic principles as well. I just can't believe that anyone flying with an Ipad on their knee isn't going to spend a bad amount of time heads down. I still love my Garmin 3 pilot which velcros to the top of the coaming well within a good scan!