You will find a few challenges
1 - The display quality will be a bit of a challenge in the sunlight/glare
2 - 15 in is pretty big to fit in the same kind of area as your approach plate (also if you have a PAX in the other front seat, a 15 in tablet will be awkward
3 - Poking around with the special pen is a pain.
4 - I found Windows and Jep to conspire together to not be altogether reliable.
On the other hand, team up a small printer so you can print the expected plates and have the tablet as your atlas of potential diversion plates works well.
If you are turbocharged and not pressurised, the hard disk will give up somewhere above 10,000 feet and probably below 15,000 feet.
Finally, remember these are NOT laptops - the heat generated while sitting in your lap for an hour can damage important bits
