The keyboard is sold as a full-sized keyboard, so that will control the actual size and placement of the keys, but there is a bezel around the keys that adds to the size of it. I'm not sure I will be able to carry the keyboard with me everywhere I want to.
Using the Keyboard
This keyboard will make it substantially easier to write long notes, reports, and blogs.
When you use a keyboard connected to an iOS device, you can use many of your familiar keyboard shortcuts, like copy (command+C) and paste (command+V). There are other shortcut keys that are inculded on this keyboard, like the Home key (that will take you back to the home screen), the Alt/Option key that changes the delete key to delete right.
This is a great keyboard if you need to have a plug-in keyboard that is not wireless. After using it for about 30 min I got very comfortable with it. It is cheaper than the Apple Bluetooth keyboard.