When they were first laid ,they stuck out somewhat, and we very much wished that they would naturalise.
Be careful what you wish for. Naturalise they did.
It's been a constant battle to keep the grass off. Last year I resorted to using a strimmer, which was quicker than doing it by hand, but I did get through a ridiculous amount of strimmer line. If you have shares in it, you can thank me personally.
This is an example of one of the least bad paths.
DH set to with a spade today. One large wheelbarrow full of detritus later, we can now see the path