This stand fits easily in the pocket of your carry bag and is very light but also quite sturdy.
I tried it with an electric guitar and a bass and it holds them in place pretty well. I even gave them some soft knocks to check the stability and I wasn't disappointed.
My conclusion is this: if you don't touch the guitar it will never fall. However if there are people, dogs, cats etc. moving around or if there is a very, very strong wind, the possibility of an accident rises. So if the environment is safe, you don't have to worry.