Reviews for Surface Pro keyboards are available at PCMag and cNET. Reviews from users are available on MicrosoftStore.
The reviewers at PCMag praise the magnetic flap of the Surface Pro keyboard, as well as the built-in pen storage, improved trackpad and large physical keys. The negative points mentioned by PCMag include the high price and the unstable feel of the keyboard.
Many of the consumers who reviewed the keyboard on the Microsoft Store website mention the comfort and nice feeling of the tablet, as well as the fact that it is lightweight. Some of the negatives include problems with connectivity and the lack of space between the keys. Other places to read reviews include Trusted Reviews and Amazon.