I'm one to bring a ulock AND cable when i trad tour with 4 panniers. The weight doesn't matter and the security is a bonus

Even while ultralite touring I bring an (alloy) U-Lock. I felt allright using one locking my bike up for food and shopping stops even in and around San Francisco.

Maybe locks are more peace of mind?

I've used cable 'coffeeshop' locks on rando type rides, but wouldn't leave a bike with one of those in SF for any duration.