Yeah, those bar end shifters would drive me crazy. I always end up needing the brakes at the same time I'm shifting around...like when you're coming up to a red light, you want to downshift and take almost at the same time.
The only other thing is that in the twin cities (I live in Minneapolis) I feel like while the Surly frame isn't as "flashy" as some other frames, it's not incognito by any means either. A lot of people here have heard of Surly...I think it's still pretty brand name to bike thieves.