You can add an easy third layer with the Abus plug-in chain, securing the bike to an object, or even securing a second bike between yours and the object.I have a Vado 5 and a Vado 4 and use two different locks for each:
1. ABUS 5755L frame lock (aka cafe lock)
2. ABUS Bordo Combo folding lock.
The folding one is good to lock to an object.
The frame (cafe style) one doesn’t lock to an object but is good to immobilize and is arguably harder to cut/defeat.