Yep. Been using this pair in various parts of the country for the last 30 years. I reckon since moving here just over a year ago they have worn more since than before.
I remember doing some races many moons ago, at Kit Hill, down to the Tamar. Don't remember granite so much as the arsenic in the dust that got churned up by the moto x-ers who used to ride around (not while we were racing, mind) Ahh, fun times.
Didn't hate it though (just to keep on topic)
Is that MTB?* What you need is M231CD SUP Ceramic rims. And it just so happens....
*I don't know if M231 is a thing for road bikes and I can't be arsed to look it up