I have always seen the dilemma between performance and the "social" aspect. Since each person will weigh in differently, it becomes a matter of preference and personal opinion.
Just for kicks, I am using the Twist with a Vivi Nova tank right now at about 4.2 volts on a 1.8ohm coil/head. Apart from just telling everyone exactly how much I value the "social" aspect, I would also like to say that I have found it to be a great battery. It is a bit long but it performs very well and I'm not all that easy-going. Your vaping experience will definitely move to another level when compared to the greensmokes.
Have you considered a Riva 650? It is pretty small and with a 1.7ohm cartomizer, it too, will perform quite a bit better than what you are using now, although the benefits of variable voltage will be lost. It is similar in diameter and about 1/2 the length of the twist.
Only you can make the call as to what you find socially acceptable. Luckily, we now have a plethora of well-performing devices to choose from according to what we believe best combines performance and aesthetics.
All the best!