I thought it was pretty obvious that I'm asking it in the context of Gimme Danger scenario, but aparently it wasn't. Let me ask again then - would you, being a guard in Arasaka Industrial Park, let someone who looks like a hobo in, if all they've done was dropping the name "Abernathy"?No, because I would know my supervisor by name and recognize his face, most likely at least. If my supervisor would show up dressed like a hobo, I would still recognize him. Just like you would be able to recognize an imposter, regardless of whether or not they wear a business suit.
See, the point of this skill checks isn't to convince an NPC in your belonging to some faction or subculture. It is to showcase how V uses their life experience to achieve certain goals. In a quest you mentioned, Gimme Danger, corpo-V can convince a guard at the gate to let them in. They do it by name-dropping Abernathy. The point of this isn't to convince the guy buy looking like an inspector - the point is to tell him something that only an inspector should know. This info will remain with V regardless of how they dress.
Negotiating with NetWatch agent doesn't happen just because corpo-V has good clothing - it happens because they have a good business sense and a deep experience of surviving in a cut-throat blue-collar environment. None of it should be tied to how someone looks.
I know that the guard is nervous because they fucked something up and "Abernathy" is supposed to be a trigger that puts him up against the wall, but not considering how V looks is unrealistic. It's one thing if someone who looks the part walks up to you, drops important name and you may think "oh shit, better not dig myself a deeper grave and let them pass, they look like someone who can end my career", and other when someone who looks nothing like being a part of Arasaka drops some name and there is no red flag that maybe it's better to check them further before letting them in.