This is the top dog scoot....tho hardly qualifies ( nor does the Burgman 650 really as the motors are frame mounted. )
[video=youtube;oBUZ_mBhs98]https://www.youtube.com/watch?v=oBUZ_mBhs98[/video]
acceleration 170 to 220 on the Aprilla 850.
on topic....best to disguish city scoots from the larger 250 and up that are highway capable.
The latter the same choice applies be it a 125 CBR or a 150 Vespa.
Gear up or not - riders choice. The smaller scoots are less stable on the highway and easier to maneuver in the city and brakes suck.
When it gets up over 110 KPH it's really what you hit or don't that counts to survival. Skin loss is your choice
Mesh jacket and knee pads under my very light riding pants is usual minimum. I'm bad with gloves as I'm photographing and tend to stuff them in the glove box when running around back roads at wobbly speeds where dumping on a bit of gravel etc is a real possibility.
But risk is up to the player - doesn't matter what the sport.
Helmet is mandatory in Ontario just as parachutes are mandatory in solo sailplanes.
All else is up to the person taking the risks.
One thing I don't like to see is squids taking passengers without gear as the passengers will not understand the consequences or risk.
Scooter rider wants to go buck naked - up to them.
I like her choice of "gear"