The location of the HV curve in the RFM depends on the size (read # seats) of the helicopter, at least for US regulations. Not all EC helicopters have it in the limitations section, by any means.
I leave my lights on after landing to try to make sure all the rubberneckers can see me. I turn off the landing and searchlights at night, but leave everything else on, especially the t/r light. Accident scenes are chaotic at best, and there is usually little if any security. I try to put out as much light as possible, both to make sure the pedestrians see me, and so I have a better chance of seeing them.
Purge, for someone without a license (your profile does say you're a wannabe) you seem to do a lot of criticizing of pilots, some of whom may have been flying for longer than you've been alive. Just an observation...