My front Gatorskin has done about 8,200 miles without a puncture, the back had two pinch punctures where I hit a stone so hard it pinched the tube against the rim, the second one was so hard it put a dent in the rim and took a chunk of rubber out of the tyre, after chaging the tube it still ran a few hundred miles before i got another, not had one on the new rear yet and that's nearly 2,000 miles, since early June, the front also it seems survived a scrape with a kerb yesterday, which a similar thing some years back took a chunk out of the Kenda I was on
The ultra sports or the new equivalent I wouldn't trust more than a couple of hundred miles.