Bobby, you make your point well but the limiting factor will always be the integrity inherent in such a device. To boldly go where the device says it is OK is not the solution, especially since such devices do not normally display their current accuracy status. Nor do I reckon RAIM status is checked before flight. Without knowing that status, you cannot prove where you have been key alone use it to drive you to where you want to be. But to be honest, I think we will be splitting hairs forever.
I used to take pleasure in navigation, both in teaching and application. I used to think it a worthwhile skill. But you lot don't and it appears that I'm in a minority of one here. You are obviously armed with multiple GPS systems with moving maps, know the seconds to go to each waypoint etc. So if you people get pleasure from following a bloody iPad around the circuit - knock yourselves out!
PM