The sacrifice is that the Surface 3 doesn't feel quite right when left resting on the knees, rather than a proper flat surface. It is not to be ruled out entirely, but as the device's weight is left resting on a very small surface area beyond the screen itself, it it simply not as comfortable or as secure as a traditional laptop design. The keyboard simply isn't used as a weight-bearing part here.
Keyboard
The keyboard is one of the Surface 3's most important elements, though. Like 2014's Surface Pro 3 design, it attaches to the screen part with magnets, while the actual connection is made using a few metal contacts on the side of the screen part.
Unlike some other hybrids, the connection between the two parts is physical, not wireless. This eradicates most issues with key responsiveness, although during testing there were a few moments when the keyboard had to be removed and reseated before being recognised by the Surface 3. These are minor niggles in use, though.
For the most part the keyboard is a great success. Thanks to the use of full-size keys and key travel on-par with some Ultrabooks, the Surface 3's typing experience is convincingly authentic given the keyboard is just a few millimetres thick. That is, after the user has become accustomed to the slight buzzy feel of the board.
