I'd opt for a skateboard before a razor scooter.
I've tried razor scooters a few times. I'm athletic and "coordinated" (hockey player, on- and off-road cyclist, former BMXer, hiker, paddler, etc) and every time I get on one of these I'm just not comfortable. I feel like I need to keep my weight shifted back in such a way that it is just not fun. Actually, it makes me a little nervous when I see others riding them.
IMO, there is just something inherently wrong with the razor design that can easily cause a face plant. If the front wheel catches a rut then you can go down quickly, and hard. On a skateboard you have some time to catch yourself, tuck and roll if you have to, and your "active" cruising position is more comfortable and safer.