I've "introduced" 6 or 7 friends to vaping over here too. None have actually quit smoking just yet but all are way down on their daily cigs. While vaping is catching on in the Manila area, there's hardly anyone on this island that is doing it. Makes it hard to find equipment, juices, etc.
I too, like having people wonder what I'm doing when I'm vaping. I was in the bowling alley and hitting my LT when the manager asked me what that was. I told him it was my asthma inhaler and just let it go at that. The next week when I went back there vaping away again, he said "That must be some pretty bad asthma" so I finally told him. He was surprisingly cool with it and even took a shot at it himself on some Red Bull juice. I did tell him I'd revert to stealth vaping with my eGo though so I wouldn't freak out the other patrons. It's not mainstream enough over here yet, but I'm working on it....