that works fine, as long as you have a smooth floor, as long as you have the room under and around the vehicle to maneuver, as long as there aren't any air hoses, drop cords, nut, bolts, tools, rocks, small furry critters.
Ever caught a shirt tail or jacket in a creeper wheel? how about the draw cord for your hoodie hood? imagine doing that under power now, should be a laugh riot, if you escape without injury.
pretty much just like a regular creeper, they are great in ideal conditions, but those conditions aren't normal, and unless you have the space to operate, it's pretty pointless.
one of the many garage solutions that copious amounts of $$$$ don't really solve.