I live in inner Sydney and I'd go crazy if I couldn't ride. So, I ride an R1 to work every day, rain, hail or shine. Bit of a ridiculous bike to have for a commuter but it's a lot more fun and much faster than any other option. I would probably only be able to ride it on weekends if I worked in the CBD though. I'd still recommend it if there is any chance you can filter and get to work without too many headaches.
I've been meaning for a long time to get a new one, but live in the city, so it doesn't make a lot of sense to have one here.