I was in Lisbon for Web Summit and the scooter on the streets was a great way to get around. So for none locals it's definitely a benefit for short trips and for the fun that it brings doing it in a group of people.

However, doing it on a day to day basis you can quickly spend more in a couple of months then just buying a scooter. The only benefit is not having to lug it with you, but not sure if that offsets the higher costs of non-ownership.