I'll admit I was I impressed with the filing of a flight plan from a taxiway at an airport in Morocco. But I'm going to be boring again. What happens when the damn thing packs up? it will. Also, when this lump of silicon decides to misbehave, which it will, who flies the plane when you do battle with wretched thing? These bloody bits of silicon are best left in your bag when VFR flying because too many PPL's have shown the world what happens when they fail. If you can't fly without one, you shouldn't be flying. So when you reply, "Oh, but I can!" Why do you need one?
PM