We have the Razor (?) scooters at my office. To ride around in the building.

I don't know how they compare to the ones you're looking at, but my only negative experience was hitting a wall once pretty hard b/c my company president popped out of nowhere and I didn't want to hit him.

They are, in my experience, a lot of fun and not difficult to navigate unless you're in a room full of cubicles and support columns. I couldn't use it to get to the restaurants, etc. up the street because the office complex forbid them on the sidewalks (boo).