I used my iPad knee holder I got from the OzRunways mob, for the first time in flight today. Very easy to use and see, didnt foul the controls at all. This was in a C182 and Im a tall guy. However I did have issues with the gps reception, at times was several knots slower than a/c gps gs, at times had no reception at all.
This test was on two brief flights today, iPad along for fun really, not needed dropping meatbombs.