Hi,

Simple question: Does patch released 9 november 2010 fix issue with certain inventory used in quests (like moto-runer helmet or underwater breather from quest Volare! ) that cannot be removed from inventory after picking up and saved and loaded save file because game says that theyre essential to quests even if that quest is already complete ?

No, it was .exe changes only.

The community patch does, but sadly that's down due to an ego conflict.
You can still get the individual patches over at the Nexus if you know what you are looking for: http://www.newvegasnexus.com/index.php