After reading my own 'Dex again, I have to agree. The officer is no longer an IC with retinue, it is just a squad. 1 KP only.That faq you're referring to, Diggums Hammer, is older than the current (new) IG codex and therefor not viable, because it refers to the last IG codex.
With the actual Codex, Command Squads of any kind only count as 1 KP. no matter how many advisors/bodyguards you add to them. They only count for 2 KP if you add an independent character (like lord kommisar or primaris psyker) to the squad.