I have one good friend at work who smokes regularly - I hooked him up with an EVOD kit and he's doing pretty well, just social smoking at the pub now and then. He cracked the tank at a New Year's party and has been smoking again for a week though - gave him my EVOD until we can get to the shop at the weekend, so hopefully he will decide to stick with it.
Another friend from work started smoking socially with us (he had quit several years before), and after getting a starter kit he gave up the cigs and now doesn't really vape either.
Third smoking colleague flat out refuses to even have a puff. No idea why, each to their own I suppose.
Non-smoking colleagues at work have been supportive - one described my switch to vaping as "amazing". We recently got moved into a very, very small shared office, and I think it makes a big difference to the non-smokers that I no longer smell of cigarette smoke. Non smoking friends all have no problem with me vaping in their homes (I keep it respectful and don't fog up the place).
My girlfriend has cut down a lot with an EVOD kit, but after discovering some new juices and investing in mini protanks I have a feeling she might end up switching completely. She has a few light smoker friends but they all seem fairly unconvinced - main complaint is "It tastes really nice, but cigarettes have a certain 'something' that these don't".
I met a non-smoking trainee doctor in a pub a few weeks ago who approached me when he saw me vaping. He was very interested in it (he was aware of them but had never seen on in the wild), and even had a puff. We chatted for a bit and I told him my quitting story and about the number of similar accounts online - he was very positive about it.