Dislike the same plug-in from JP2 or the other one, OraNuke doesn’t not need to operate the scene description file (.rib .ass), it just receives pixel data from the renderer, so that would be much more convenient and friendly.
Demo here
Now it supports both Arnold and Nuke now, no .ass, just setup AOV in Maya, and click Render, Nuke would receive the all AOVs !
http://screencast.com/t/rZAHTFOD1E