I first liked the idea of the mats but when reading through I decided on better foot ware and mother gave me a stool for when i am in one place that long, lol
My hall carpet traps bits of swarf to the Mrs delight
I like rubber mats near machines and benches, not for fatigue but being clumsy if I drop a workpiece ,mike or whatever it can survive unscathed.
I’ve also found swarf destroys concrete or grinds up concrete where I stand at a lathe and walk on it, doesn’t take much or long .