Should work now. It is clipping while sneaking (like the original ) but I wanted to help for a quick fix and not making a new armor 
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What I did:
Renamed the body parts to logical and game compatible names.
Corrected the weightpaint on arm, right pauldron and armor gear.
Sorted the nodes.
Senterpat and the Proximitus can do whatever they want with this file.
Looks great! Only a little bit of clipping in the neck (as you can see on the picture). The clipping while sneaking was already there, not really irritating..
Thanks guys for the help! Gonna try fix it up with another mesh for the coat, one that hangs more instead of "flapping" from [url=http://www.nexusmods.com/newvegas/mods/44045/?]this mod[/url].. Again, thanks for the help!
Not that the neck clipping wasn't already there and is actually in the vanilla vault suite too :) .
Really? Becaus I checked it with the normal and the armored vault suit, and it wasn't.. Probably missed it :P
I didn't touch that area at all and yes the weightpaint there is the same as vanilla.
Oh well, not much of a biggie! I'm glad someone helped me with it at all :)
Update: I just noticed that the sleeves were rolled up and that the wrist guard at the right wrist is gone.. Is it possible to bring that back? :)
Yeah I used Senterpats outfitarmor3.nif there they are missing they are in vaultarmorm.nif I take a look at it tomorow.
I was wondering if anybody has looked at it or not :)
After fiddling for a while, I finally managed to get it working myself!
After cleaning up your old armored vault suit and turning it into the C.U.A.V.S (Cleaned Up Armored Vault Suit), you get the oppertunity to enhance it with a coat of Gecko Hide. The Vault Vaquero Duster V1.00 can be improved with the skin of Deathclaws, enhancing it's DT and renaming it to the Vault Vaquero Duster V1.01
Behold!
