Won't stop everyone
I bought one of these early Spring as the weather started to get better and I could ride again to work. I usually locked my bike up using the cable in and out of the wheels and around the bike stand in front of my office. I thought it was pretty durable and strong but one day after work I came out and the bike and cable were both gone. It couldn't have taken too much effort, as it had happened in daylight roughly before 6pm in front of an office building with a lot of foot traffic and many people around to see.
With my new rides I am only trusting a larger U-lock from now on.