I've rode inline skates to work, ride kick scooter and bicycle. But it was Heelys stop from 5 km/s to 0 face down on asphalt that was the worst. Quick change of direction - from forward to into the ground. Too quick for brain but hands took part of the momentum. Palms heart, it would be unfortunate to be programmer with broken palms, I was lucky. Stay safe.
And for example kick scooter is not that safe. Inline skates on the same speed gives much more control. Bicycle is yet safer.
I like the idea - should be fun to ride, I do not like product placement.
I fully agree with whoever told you that the automatic braking is dangerous on downhills, that has been the source of all my scariest Onewheel moments and now I don't go above 10-12 mph when riding downhill, which of course is much slower than a safe downhill speed on a regular bike.
Now I've got a friend trying to convince me to buy a OneWheel. I just can't justify $1500 for a weird skateboard when I could literally order an electric car on Alibaba for that much money.
I figure between legs, bikes, cars, trains and planes, we've pretty much got transportation solved. Segway tried to solve what bikes solved a hundred years earlier. But bikes are less expensive, are also really fun, and are great exercise.