Got to mess with a tablet today that had software written especially for Tacair application. It's an Android product, and it has a surprising level of functionality, but it's built almost completely for carrying GRGs (that is gridded reference graphics). Anybody know how many GRG sheets there are for Afg? Just a little over 1100. Good luck fitting that in your G-suit pocket. It's still getting worked on, but it's pretty close to being ready for prime time.
All we carried GRG-wise in Afghanistan were iPad 1s. Toward the end of the deployment we got iPad3's that worked much better. The only people who use GRGs with any regularity and any hope of standardization anyways is the MEF AO, and that's the only AO we worked in. CFACC air doesn't carry GRGs at all for the most part - largely because there are so many (and they don't have a solid digital setup).
Our iPads had every MEF GRG in them, georectified and searchable. We had a couple programs that you could choose between, each with their own pros/cons, and different pilots used each one during certain situations. The difficulty with trying to mark positions was the most annoying aspect, but we got by ok.
So, they're out there in "prime time" already and have been used with good effect.
With the advent of the iPad mini, we've reached a more portable kneeboard sized tablet. We should bite bullet, invest in ForeFlight, and get on with it. We carried all the charts in PDF form for the TRANSLANT there and back. Paper pubs were backups only.
/knows a thing or two about Afghan GRGs
//the MEF has it SO much better than everyone else