Thanks for sharing your experience. I just faced the very same thing on build 10162 with Arc Touch Mouse Surface Edition.
After installing the right version of Mouse and Keyboard Center and restoring the defaults, scrolling started working, but middle click remains broken.
That’s a shame for Microsoft. As a customer using almost exclusively their products — Surface Pro 2, Arc Mouse, Windows 10, I’m even running Windows 10 on my Lumia! — this kind of treatment make me really sad.