Got my Chinese version, I haven't spent long with it but it is an "alright" device with some headline features like the fingerprint scanner but also drawbacks like USB Type C.
The fingerprint scanner/home button can be a bit hit and miss, when it works it is quick but sometimes it doesn't register, being recessed doesn't help. I think this is both software and hardware related, once I get the latest build I will feedback again.
USB Type C is extremely annoying for me especially as they decided to exclude a Type C to Micro USB adapter in the box. Again charging speeds seem to be a downside, being restricted to 0.5A unless the official adapter is used.
Snapdragon 810 hasn't been an issue so far, hotter than 801/808 but not overheating. A glance at CPU-Z seems to suggest 8 cores are never used at once, it behaves much more like 808 using 6 cores, and as I'm typing this with low battery it is using the A53 cluster exclusively and not the A57 cluster at all.
Dual sim on the Chinese version does actually work with one IMEI somehow, I have had a few issues with outgoing texts/calls but incoming texts/calls work perfectly with EE/Vodafone sims.
Is it worth the price? Probably, but it is very similar to the LG G4 which has reached a similar price, and the next nexus' will be a couple of months away max.
Is it worth the wait? Depends on how long, it will still be a competitive device this Autumn but much Winter it will have some real competition.