The advantage of this sort of lock is that it not only prevents most theft, but it also prevents the sort of damage someone might inflict before giving up on stealing your scooter like sticking a screwdriver in the ignition, tearing off the front and ripping out the wires, breaking the steering lock or pushing it until the disk lock stops it and the bike falls over. They see this and move on to easier pickings.
. Also, you will use it, because it's not a big production to take out of the seat or topcase and run through your tires, and your hands don't get dirty.
Here is a link to all of them (so far)...