For those of you wondering about the RAM mount, etc for the iPad mini, I went with a 64GB mini 3G with the retina display in a life proof Fre case. I then purchased the Lifepoof cradle which has a provision for a RAM ball at the back. I've been flying with it now for about a month and these are my initial thoughts.
I get about 10-15% per hour of battery life. Depending on screen brightness and how much I use the data feature, in my setup I placed a SIM card into it and have it sharing my data plan that my wife and I already share.
With the data plan, I only use between 5-10MB/day while flying if I'm heavily referencing weather and airport information.
If you buy the 3G version, don't waste your money on buying an external GPS. The internal cellular GPS is more than efficient on finding birds, even when powering on in non-cellular areas. Case in point, I ran it on a recent flight from Edmonton to Yellowknife on Westjet, I had an aisle seat and it locked onto location in about 20 seconds from a cold start with no cell service at 40,000'.
At Costco, I found a laptop hard drive sized external battery pack. I have that velcro'd to the back of my lifeproof cradle, and then the USB cable powering the iPad mini. My battery pack is 8000mAh, which means I get around 2-3 full charges out of the ipad with it; not to mention it's a great bush power pack to keep your phone or other devices charged when waiting for the customer and you've drained your battery playing Angry Birds. The Costco pack also came with a 12-24v USB cigarette lighter unit that runs off the tail that I've created that plugs into AC power, and thus can actually power the iPad during flight.
I still use my 496 religiously and update the NavData about once a year. I wouldn't fly the iPad solely, (even though I'm confident I could), I purely use it as my backup navigation/map/CFS device, which it does flawless.
I'm still a low-timer in the grande scheme of things, and my company mainly has me doing ferry flights between AS350 an BH06 products. Having the moving VNC/VTA ability is amazing from a ferry point of perspective, however if you're within 10 miles of camp the whole time moving a drill, I don't see it being beneficial.
Here are the cases and cradle that I bought:
Finally, as for window mounting the unit in the window, the mini fits perfectly for me right near the door pillar where the window is near flat on both the AS350 and the BH06. I've gone through rough turbulence and hot days and no issue with the setup. Attached is a picture of what the cockpit looked like while on a recent Long Ranger trip.
If any of you have any questions, please feel free to let me know. I'll be happy to share my experiences with it thus far.