Looks neat, but I use a big piece of cardboard as a creeper when going under cars, crawl spaces, You name it. You slide easily on it. Ask any break dancer from the 80s how slippery it is.
It's free, You slide around easily on any surface, and it catches the oil mess that would be on the floor. I toss it out with my trash when it gets too dirty. I usually have a few boxes from big screen TVs, water heaters, etc. I also picked up a few cardboard flat packed large cardboard boxes at lowes for a couple bucks a piece to store stuff and found they are a great size for working under cars.
Never had a problem
I hated my regular wheeled creeper so bad, that one time it ticked me off about 30 year ago I rolled out from under the car I was working on and kicked a hole in the creeper and threw it out. Never used anything but cardboard ever since.
Chris