I just finished instruments in 31. Very few instructors cared that I used it. I don't use the gps function. I have folders saved for each airport so I can open whichever approach plate I need. It saves me time trying to flip between dot and dod, star to ifr sup, and lo to airport diagram. Some instructors pushed it, others gave me crap but were ok with it. I always had the paper close by just in case they wanted to screw with me in the emergency sims and review stage. I suggest getting a solid case that will permit you to clip the iPad onto the side window. I clip my mini 2 at the upper left corner to the side window with the clip that they issued us just like a normal approach plate. It works well and I'm not heads down as much from my scan. Some guys just strapped it to their kneeboard and they say it works well though.