I wear out the outside of my heel if the heel material isn't really durable.  I haven't had these too long, but it is wearing out too early.  Took 3 days to break in, and laces broke too soon.  The grommets are sharp on the inside which cut the laces that came with them.  They could make them a little better.  Soles wear out WAY TOO quickly!  Update 12 12 2015:  terrible quality-DO NOT RECOMMEND BUYING-they don't last.  The soles are almost gone.  I've worn other shoes for over a year and they lasted way better.  DO NOT BUY THESE!