If there is one thing that annoys me during air travel is the made up rule hiding behind a mask of security and/or safety. The iPad Pro is the same weight as the iPad 1 so it's not weight that's the problem. And if it's size then it must be quite easy to stipulate an acceptable size rather than a particular cabin crew making it up.

If there was an incident an iPad Air potentially with no case is acceptable to be flying around in the cabin but the iPad Pro potentially with a leather cover is unacceptable?