Install 8.1 over a factory W10 image?

Alright folks, I've been doing some looking around, and unfortunately, *W10* leaves a bitter taste in my mouth... I'm interested in a new 2-in-1 mobile platform, such as the ASUS Transformer Book, the so-called "TabTops" or "LapTabs" (I think I agree with the former term a little more, but that's an opinion). I'm thinking of investing in one of these powerful mini-platforms, but all of the...