They're still on my commuter too. I took the front and rear reflectors off only because that was the only way to install actual lighting.
I don't ride the roadie after dark on purpose, but anyone can get caught out by flat tires or mechanicals. Leaving the reflectors on your bike is an easy way to ensure that you always have something reflective on. Gussying up your helmet with reflective tape is another way (just be sure you don't let the adhesive contact the EPS).
I have a feeling that the snob factor comes from two places: (1) front and rear reflectors usually are held by cheap, tacky looking brackets; and (2) wheel reflectors really can pull a lightweight wheel out of true, and by definition pull it out of balance.
Speed comes from what you put behind you. - Judi Ketteler