Regarding NVG route recce and obstacle information on ops vs training I approached both the same way - get as much information as I could. More info = more effective use of the aircraft and its systems.
Interesting to see the AAC approach it the same way for Apache ops in Libya. In their case they had the professionalism to request wire and obstacle data from the Sentinel dudes. Again, the more info you have about the hazards around you the more effective you will be in doing your job. Getting a radar update, conducting a recce or asking a mate what he saw yesterday can make all the difference!