[The Wyrm Ouroboros]

Hmm.  Well, in which case I'd definitely look into dropping your Athletics group by 1, and get your Firearms group at 4.  Otherwise, all in all, a good character.  And I'd still go for cybergills. 

[Aryeonos]

Or internal air tank, it's got an hour or so supply right? And it could potentially protect you from other inhalation vector poisons (Though gasses like neurostun are contact vector, so no help there.) You can also put the air tank into your clothing instead to save some essence.

[The Wyrm Ouroboros]

Which means you'd always have to be wearing that coat or jacket.  If it's going to save your life, I prefer something they can't take off your back - or relatively easily shoot a hole in.

[Aryeonos]

Heh, you show me the guy carrying the battle rifle and I'll be sure to tell our guy with the air tank to duck.

side plea: could you guys help me with my Sioux nation character biography? I know I made him as a joke character, but I'm rather infatuated with the concept of legitimately playing him now.