Banana Pi BPI f3 - Spacemit K1 anyone?

Has anyone used such a system as a "daily driver"?

What do you need to do in order to boot a normal distro such as Debian or such? How does it stand from the perspective of user/software freedom? What sorts of proprietary sh#ts does it need to be usable? What sorts of compromises that may not be obvious at first glance?

Also how does it "feel" day to day?