+1 to all that Sloppy said.
Oddly most bike theifs are not as some think "joy riders"
Most bikes are a bit difficult to hot wire and ride off with, unless the thief has already studied up on what needs to be done. Can not really see one wasting time learning how to hot wire a Vulcan 750.
The usualy bike theif either hopes to :
A: roll the bike down the street and up into the back of his truck-or roll it into a secluded spot they can work on the ignition unseen.
B: The theif has freinds and they just pick the bike up to put it in the back of a truck.
This means the device shown might work in scenerio A , but if the theif has seen the lock on the bike before, he will go with plan B.
There also is the hassle of what to do with the lock when you are not using it, and the horrid problem of what to do if you loose the key.
I used to lock my bike up to a tree using a hardened steel tow chain from a Huey helicopter. It was a only a $900 bike, and has fate would have it they cut the lock, left the bike and stole the $1200 chain.....LOL
I think the lock shown would be great for scooters, but I see no real advantage on using it on a motorcycle , If you live somewhere that has alot of bike thefts, you are better off going with a more elaborate system like an alarm and lowjack and the afore mentioned chain through the frame.