[JJ_SO]

The most successful adapting happens with Canon glass on Sony.

 

So, from my perspective:

• Nikon users can wait until Nikon comes up with something mirrorless and F-mount. And if so, enjoy the endless plains of menus and sub-menus, but the good news: Sony hasn't a better attempt.
  
• Nikon users can learn to live with a couple of limits when using a Sony - no eye-AF is something we Nikon users don't know much about, we're just with face-detection and to be honest, I don't trust these hasty phase-detection AF units much accuracy
  
• Although Sony has a good concept, at some spots they are just "not there" - and we Nikon users can happily use our stuff furtheron.
  

So if one comes up with something similar to the Sigma/Canon - Sony adapter: Great, wake me up, please. All other adaptors I just pass. I already lost track of who is making adapters and what are they not doing.