The screen keyboard is OK, at least for light duty typing. It would help, if you could feel the keys and the board was movable and scalable. It can get in the way, or better yet let the window fit to the top of the keyboard, so you can access the bottom of the window while typing.
The cover works much better, but it does take up space, which most of the time is not an issue.
In either case, it is still way better than the small tablets and phones.