I think this is the best thread for this...
The other day I had the chance to again use my 3g (built in gps) ipad enroute. It worked flawlessly. Passing it around the cockpit and using it to show us on an en route chart, vfr charts, etc. Also as an accukwik, using it to get FBO frequencies, locations, etc. Now, without a data connection, or being above about 8000' there is no weather, but there is no solution for that to my knowledge yet at altitude.
This was in a g200 with the windscreens off, but having them on didn't appear to kill the gps. My opinion of the ipad in this environment as of right now is this (with foreflight installed):
It will save a Jepp subscription for each of our airplanes. We can still have one for print stations in the hangar, but NOS charts will do fine for unplanned stops/alternates.
We will no longer have to waste time and money on accukwiks or uvplanner. They become needless clutter.
I HAVE NOT actually tried it, but I can imagine that with a duats acct and the proper profiles, we could even save major $$ on services like arinc for flight planning/filing/weather packages. This idea does need some fleshing out, but it seems plausible.
The ipad (3g) would replace the blackberry (barf) based navigator that the company pays $10/month for each pilot.
There may be other things that I haven't come up with yet, but after one or two trips with a 3g ipad (16gig) these are savings that I believe would directly result from the investment.