By chain lock I mean something like these:

Kryptonite New York Chain
or
Kryptonite New York Noose

Like I said, I guess the appeal to me is being able to lock the wheels and frame with one lock. I know that's insufficient if someone REALLY wants the bike, but this area is relatively low risk and will have lots of bikes locked from mediocre to poor, so I feel like if I can be one of the most inconvenient to steal then I'm doing well.

If a u-lock with cable is better that's cool too.