Stone Path with Minature Mondo Grass, Black Mondo Grass, and Johnny Jumpups

Is mondo grass one that will not grow as fast or is tougher for walking on?

It is the only thing I've ever planted between stepping stones that lived. It gets dry here at times and very rainy at other times so most stuff either drowns during rainy spells or dries up during the heat waves. I like it because this is as tall as it gets if you buy this drawf mondo grass it gets thick very quickly without getting too big so it maintains a neat appearance for me.

I like to see rocks and stones in gardens.
This looks lovely :o)