I had already quit analogs before I got my current job. Knowing that my insurance would be $60/month more if I was a smoker, plus the cost of cigarettes, helped keep me off them. Then I saw in the benefits signup package that the extra premium was for tobacco use.
Insurance reps were on site answering questions one day, so I asked three or four of them separately about electronic cigarettes. They said they are considered a nicotine delivery system, just like the patch and the gum. Since they don't contain tobacco, there would be no increased premium.