Quick drag?

Apparently there is the possibility that use of e-cigarettes could be banned in public places, as normal cigarettes are.  This has already happened in New York and Chicago, and there are calls for us to follow suit.  But e-cigarettes are mainly used by those who are seeking to give up smoking, like the use of nicotine patches, so what's the logic?  It seems that the fear is that the regular sight of people using e-cigarettes could "normalise" smoking and "undermine smoking prevention".  So it looks like we're dealing with a lesser-of-two-evils situation here, and perhaps we need more research in to precisely what motivates those who use e-cigarettes, and one thought which occurs is that if there were a ban on manufacturing e-cigarettes which look like real cigarettes the visual connection which is worrying some people would be broken.