Yeah, I have lockrings on everything I own but still use a U-lock and a cable to secure everything just in case there is a forward-thinking bum around.

I was eating some pho the other day and I rode the Roubaix down and locked it up (within eyesite) and sure enough, a guy stopped to check it out. I like to think he was just admiring it but he was there for about 3 minutes, which made me a bit nervous but then he continued on. He then came back about 15 minutes later and stood looking at it for another 3 minutes or so. I was with 4 friends and I am not a small guy anyways, so I continued to give the guy the benefit of the doubt that he was just checking out the neat bike and yeah, he didn't touch it but it is still a bit nerve-wracking having nice things in this city sometimes.