Currently using one of these as my main phone, as I've loaned Herself my N6P while her LG G4 is in being fixed.
EMUI really is an iOS clone, visually. There's no getting round that in any way... Pretty cheeky, but they have their reasons I'd say.
EMUI (and the already mentioned insane power management) aside, this is a ridiculously good phone otherwise!
Now I've tweaked the power and notification settings, stuck Nova Prime on, and imported my layout from the N6P, I have to say I'm pretty impressed with it.
Performance wise, it thrashes the N6P at times, particularly when installing apps. That's pretty freakish to see...
Dual SIM is something I really wish Nexii and Pixel had, as it's a feature I've really gotten used to in the last week or so. I know it's not exactly special, but it's useful beyond belief, given signal black spots on my main network (Three UK).
Actual phone performance in general is pretty excellent I'd say, although I've not tried any games (and won't), plus I've had no compatibility issues with apps that I've seen mentioned elsewhere.
Were I not retaking my N6P, I'd be more than happy to keep rocking this phone though... External finish IS beautiful on the blue version, but it definitely needs a case as it's slippy as a greased up thing, not to mention the fingerprint magnet!
That's my 10 pence worth for now...