I've used my specialized all condition pro atb (26x1.0) for over a year. rated to 125 psi. They seem plenty durable so far. No pinch flats. No flats of any kind actually. I used to have all sorts of flat problems until I switched to tires with specialized flak jacket stuff. It was a huge improvement over the specialized fatboys (decent) and michelin wildgripper city (sucked!) I used to run.
I did also get bullhorns and aerobars + higher gearing when I did my second triathlon (borrowed a road bike for the first one). For approximately the same level of effort, I went from ~20mph to ~22mph just by tucking into aero. Not exactly a scientific study, just watched my computer when I tucked and untucked a couple of times.