I'm using Street Twin to work from Gombak ->KLCC-> Bukit Bintang everyday, the bike is not that big but definitely bigger than kapchai or 250cc scooter. cilok is fine but you need to be patient and realise that you are not riding kapchai so you dont go for every gap. If you think the gap is not big enough just wait and let smaller bike passed you, eventually it will open up and you can move. I ride the same route with my Nmax and found the difference in commuting time is probably 1-2 mins max.

Yup I like the Street Twin almost straight riding position and also high torque definitely a plus when commuting in a city.

The only thing is the heat is noticeable especially if you stuck in a jam or at a long traffic light. I think all these high cc bike had this problem as they are not designed to be ridden very slow in the traffic.