I used a set of these for years. And years.
Seven, to be precise, for the longer lasting of the pair.
Without a single puncture.
Ok, so I wasn't riding every day but I was out a fair amount and did a number of races.
Eventually, I got a pinch flat when riding across a really rocky section in Wales, and I shed a little tear. For another year I used the red dustcap as a mark of respect!