Frankly, at the moment, I do not see much use. I have a one year old baby and we travel a lot, and very far. So I thought it would serve me a lot throughout our travels, but no. It fits a lot of chairs, yes, but it does not fit on many more ... When it suits, I do not think it's ultra secure either, because it does not rise high enough to hold baby.
In fact, I would have done exactly the same thing with a sarong or other tissue attached to the chair.
We still appreciate the size: very small, it fits in a rather large purse or small backpack, but its use remains very concerning to me.