I have 2 cable locks on my DT. When I'm out and have to park it, I try to leave it near one of these guys!!!!
This is why I never use cables for security but after reading there are some high cost quality braided cable locks that will make cutting difficult.
The tools (sharp pliers) that can cut the best cables are much smaller than the tool needed to cut 1/2" chain and are not necessarily considered burglary tools (cant cut locks).
You will need large bolt cutters > 2 feet (considered a burglary tool) to cut a 1/2" chain and you don't want to be caught walking around with those opposed to sharp pliers for cable cutting if you have no reason to be owning them. Pliers can fit in the pocket of a pair of khaki pants.
I do have a thick Stainless Steel Master lock on it. For something quit while running an errand, why not a lock around one or two of the wheel spokes (make sure you remember to remove it; maybe paint it red to make if very visible)??
1/2" chain is not fool proof but thieves tend to look for the easiest targets. But if they really want something like my coworkers Miata, they will break the steering wheel off and use vice grips to steer the car.
This is an interesting read and thus the reason for the railroad tie for my bike. It will take a struggle to get it into a van and will need maybe 3 people. I should look to anchor the tie to the ground better but do they want to go thru the hassle for a 3 yr old 50cc scooter that's parked next to a busy PO. Sometime I am wary of the white postal delivery trucks that come thru though as they do stare a bit while I'm working on the scooter..
https://rideapart.com/articles/ask-a-motorcycle-thief