So far, I don't have any personal experience in relating to other people. Every smoker friend I spoke too told me they have been considering e-cigs and the only reason they have not gone ahead is because of perceived initial cost, but most of all confusion about what to buy.
I have to say the latter was my biggest stumbling block. I wanted top make sure that what I got would work well for me, but the choices were staggering (and continue to be so).
However, I have done enough research to know of all the misconception and the outright ignorance out there. In a perfect world, the inventor of e-cigarettes would be a Nobel laureate and the Health Dept. would be giving them away for free.
Instead, they have acquired this reputation that is totally unwarranted and which is effectively limiting the spread. I have a feeling that a few years from now, all these otherwise worthy association will look back and tell themselves "boy, were we stupid. Think how many people we could have saved from cancer if we just dealt with the issue honestly".