I've just imported a story I'm editing into Quoll. It seems quite nice. Little visual clutter, a decent feature set that helps with keeping track of characters, scenes etc, organize ideas, keep track of word count targets, keep you motivated etc. The achievements are a nice touch, and the ability to invite editors looks helpful (though I haven't tried that)

There are a few bugs (it reordered my chapters when I marked a chapter as edit-complete the first time. That obviously shouldn't happen).

Overall it seems like a big step up compared to Word. It can't quite keep up with the feature set of scrivener, but in exchange it has a much more approachable and clutter-free interface, much closer to the idea of distraction-free writing.