Pretty horrendous really!. I have never used those round key jobs anyway. Closed face locks with as many levers as possible are the only real deterrent. Some of these so called unbreakable chains you read about are as good as chocolate if they are sprayed with pipe freezer and then whacked with a hammer blow. All you can do is try and eliminate opportunist bike thieves, the true bike thief will probably succeed anyway if the bike is out in the open. That is the reality of it.
I quite like my pager alarm, at least that gives me and my trusty 4"x2" a chance at levelling the playing field with the thieving pond life that is trying to steal my bike
Linear Mode
