I wouldn't chain a nice road bike up on the street. Get a beater bike and commute with that...

I work in NYC and commute daily (about 12 miles round trip) I chain up on the street etc, I have a frankenbike that I use for that, Once I buy the nice road bike it will NEVER see a chain (or be out of my sight when not at home )

Bikes that are chained up on the street are the ones that can eventually get stolen (Don't know where you live so i don't know the crime rate) FAR easier to lose a 100 dollar bike then a 800 dollar one....

Just my 0.02