Locks that work

Putting the lock through the chainwheel can physically tether that crank but it is often not possible to do that as well as going through the frame and the stand/post, and it is surely more fiddley to do.

The distance between the inside of my rims and the outside of my seat tube is abut 8.5cm so, depending on the diameter of the stand post, I thick the Fagh should (just) fit if angled correctly. I guess if it doesn't in a particular instance, I could just switch the Fagh to the front wheel and use the Abus for the rear one.