I consider myself an ex-smoker, if I had to fill out my medical information and they had an "ex-smoker" box, I would tick it. I might one day consider myself a non-smoker, I've only been vaping for about a month, and never had an analog since the day I got to vaping.
I may never tick the non smoker box if the ex smoker box was made available to me, because I don't want to give insurance companies to find any fault with me =)
But, I won't kid myself, I DID get a nicotine addiction by smoking cigarettes, and until the day my juice has no nicotine, I wouldn't underestimate how quickly I would pick up a cigarette, especially on a night out drinking....