I voted yes, because I don't think I'll ever leave it behind.
That said, I went cold smoke on July 11 (at 1:15pm - it was a Friday). Didn't have a problem with cravings or being near hot smokers. I was, however, curious about forum reports that hot cigs taste foul after being on the e-cig bus for awhile and also about whether the usual quitter's snare still obtained, i.e. that just one real cigarette would screw the good work of the previous three months. I strongly felt this would not be the case, because on all my previous falls from the wagon, I was cold turkey on nicotine. These last three months, I've been getting my share, maybe even more than my share. But there's something missing from e-cigs that I've never really nailed down. This has been on my mind almost constantly.
So, on October 11, I smoked a real one. It wasn't foul. It sure was over quickly, though. I'm used to lengthy (almost constant) nicotine intake these days. The main impression it left was dry heat in my mouth. There was that crappy aftertaste but no big deal. Stick of gum took care of that in seconds. I liked the smell. Secondhand smoke barely registers with me, but the firsthand stuff is fine. Smells are potent memory triggers (I think they might even be the strongest triggers) and I got a nostalgia hit along with the other dangerous chemicals. Actually smoking the thing was mundane. Didn't cough, no discernible difference between the nicotine hit of the real one and my e-cig (was using a Bling mostly that day). No dizzy "head hit". Very light in the hand though - guess we get used to the weight of e-cigs pretty much instantly.
Well, I scratched my itch. I was in Cyprus on October 11 (where even the dogs smoke!) and I picked up a carton of cigarettes for my mum in the duty free shop. I bring her a pack or two when I visit her, so there have been real cigarettes in my house for the last six weeks. I haven't been tempted, and in fact I forget about them until it's time to visit my mum.
I would therefore say that for me, the chain is broken. I am no longer dependent on hot cigarettes and, as reported by many here, I believe that an occasional real cigarette will not revive that dependency. Sooner or later I'm going to get caught without a working device and I'll fearlessly grab a pack of hotties. I'll probably end up cross-eyed on the floor, because when that day comes, I'm likely to smoke 'em like an e-cig, end-to-end until the battery runs out.
Smoking the hottie made me realise what the je ne sais quoi of real cigs is, though. Convenience. Jeez, I miss the simple technology of a packet of fags and a lighter. That right there is the quantum leap. Whoever gets the buy 'em, smoke 'em, toss 'em device on to the market at a sane price will clean up, and deservedly so.
Emp
EDIT: I'm not suggesting that this will be anybody else's experience. Addiction is different for all of us and if you suspect that 'just one' will be the start of a slippery slope, don't smoke the one.