I don't see a regular pair of wire cutters getting through this cable. Bolt cutters? Probably. I'm banking on the fact that I doubt many "smash and grab" car thieves are packing a 10 lb pair of bolt cutters with them.
I have one for the rare ocassion where I need to leave it in the car. I agree regular hand tools are unlikely to work. A mini hack saw? Dunno. I think that a mini bolt cutter ( 8 inch or so) would have a chance. It does it's job......keeping me from becoming a felon because someone stile my gun. (Yes that's a crime here)