Guys, have a look at this video.
It shows that someone experienced with an angle grinder can get through Kryptonite's highest grade lock in under a minute, but the LiteLok would take 10 minutes and 3 cutoff wheels. (an extra battery for the grinder, too, as those guys probably aren't going to buy the high dollar Milwaukee that this guy had)
It has ceramic embedded in the middle of the shackle.