I don't see the point in it. If you're going to cross that mat, you can as well walk, instead of trying to risk your spine by doing it some complicated way that make you look half... (this sentence can't be finished without being quite an insult, so I'll stop it there)
We just had in in PE. I didn't bother, gladly accepted bottom marks, didn't do a thing, but also didn't, like many of the others, share a spectacular but painful kiss with the floor.
Bottom line, gymnastics is something I'd never do, even if it was a matter of life and death. Gymnasts usually retire at age 35, either because of wear damage, or bad landings. I have no idea what they do after that, but I suspect PE teacher is a common career choice.
So a huge no from me. Let the ones who like it, do it, but please don't involve the rest of us.