Hi Mald0on,
Unfortunately, neither kexts worked in the installer. I also used the VoodooHID2IC controller, and still did not work. What can I do to get them working? I am afraid to use an external keyboard in the installer, and then end up with a non-working keyboard at post-installation! I think my computer is similar to Surface Book 2 but with a single intel graphics card, 620.
Please help!