using passport to make calls

I currently have a galaxy note 3. I can manage the device fine, but it does feel too bulky to text freely and is not comfy when making a phone call.
I don't think typing will be much of an issue on the passport as I prefer a physical keyboard. However, I am concerned that holding it to make calls will be extremely uncomfortable. I like the design of the passport, but does anyone else see an issue with it being so square when it comes to holding it to your ear? It just seems like the hand would be stretched opened as if holding a rubik's cube. Are there any pictures of someone holding the passport to their ear? Please share your thoughts on this to ease my mind. The galaxy note feels large, but doesn't stretch my hand like I think the passport might.

I really don't think it will be a problem, my note was like holding a phonebook to my head, so now i will be holding a passport to my head,