I've had mine for just over a month now and have built up to running 5 miles at a time. My calves are still sore the next day, but they are getting better.
Blisters are still a pain in the arse! I get them on the ball of my feet and big toe (which I expected anyway) but I also get rubbing on the inside of my arches from the seams (why couldn't they make the seams flat stitched!?!?!). I'm sure the balls of my feet will adapt but now sure about the friction caused by the seams. May have to tape the buggers down or invest in some
toesocks?!