Scooters are pretty common is Sydney, nobody you care about would bat an eyelid. My friend riders hers around Singapore and nobody other then the occasionally overzealous security guard cares.
Really is says more about the city/society you live in if you are looked down upon for something as simple as a scooter.
Except when you need to carry your vehicle on public transportation. Then it becomes a hassle. This was the original purpose of the foldable Razor scooter for use among Japanese commuters. I always thought they were a silly compromise for suburban children to use in light of the classic, larger wheeled scooters.
Left foot forwards, right foot forwards, push with the left, then right. Both beside each other. One handed. Go slow. Go fast. All good skills.