Agreed. I've had very similar experiences. Another thing I've found is that if you are playing a sport which requires sudden direction changes (e.g. indoor ult

Agreed. I've had very similar experiences. Another thing I've found is that if you are playing a sport which requires sudden direction changes (e.g. indoor ultimate), the skin can peel off the bottom of your feet. It's probably different for everyone, but something to look out for if you plan on playing hardcore tennis or basketball in them.