Originally Posted by
Pscyclepath
THe one thing about a U-lock is that sometimes you need to tie up in places where there isn't something solid that your lock will fit around. Having the chain or cable lets you hook up to something like a telephone pole or a lamp post, as well as chain several bikes together for those times when your riding buddy left his/her lock at home.
I'd be wary of this setup as it relies solely on the security of a cable. In SF, cables aren't a theft deterrent, but instead a target, as they are quickly defeated. My friend had his MTB stolen last summer when he couldn't find a good rack or post to U-lock to, and instead wrapped his cable around a lightpole and U-locked it to his frame. The bike was gone 30 minutes later. Just my two cents
