I have the XBox 360 patch and the Van Graff combat armor is still considered a quest item and is thus not droppable, so it does not look like this was fixed in the patch. Details: I stole the armor after after the patch, so it's not from before. I have not finished the Birds of a Feather quest, but I have done the door guard part.
I too have experienced the "quest-item" glitch well after the Xbox 360 patch dropped. I came on over to the Silver Rush with Cass and I murdered everybody, including Simon. Afterwards, I found that I was still unable to remove the armor from my inventory. What gives? This most egregious oversight is only tempered by the fact that the armor looks totally awesome and works well with my current look, sporting a red beret and sunglasses.--Holymanic 00:07, October 29, 2010 (UTC)
anyone else experience its near indistructability. Edit
I have used it against deathclaws, nightstalkers, and countless abuse, and the armor is still in 100% condition,(xbox 360)Kind of reminds me of winterized combat armor (courtacy of gary 23) in FO3 Superinsomniac 06:22, October 29, 2010 (UTC)
Really now? Is this the one you steal or the one you get once you complete the quest?
It is the one I looted out of the crate after shooting up the silver rush for the quest heartache by the number.Superinsomniac 01:12, November 5, 2010 (UTC)
^^ That's because the item is marked as a quest item, and therefore is indestructible.
Just thought I'd mention that finishing the "Birds of A Feather" quest allows you to drop the armor, alternatively, failing the quest by killing any of the Van Graff guards allows you to drop it as well.
Removing the armor from your inventory - READ THIS Edit
Alright, if you either finish the Birds of a Feather quest OR kill off all of the Van Graffs, you can drop the armor on 360. Thanks prev. poster for giving me the idea. However, for the "kill all Van Graffs" to work, you HAVE to bring Cassidy to Jean-Baptiste and initiate the firefight. Otherwise, it won't work. Killchain 09:31, January 17, 2011 (UTC)