Anytime I tried using a "smaller eCig in public", the Public "Stoned me in the square". Soon changed my mind to using something that couldn't be mistaken for an actual tobacco cigarette. Last 9 months I use ProVari w/extended batt cap, w/Vision Tank of one kind or another. They, the Public, still thinks it's tobacco smoke. Now waiting for T-shirts with printing on front/back, "It's Not Smoke". JMHO
Cheers,
otrpu