Bought these after reading several reviews here on Amazon and initially I was very satisfied. However in about 8-10 months the insole started to exhibit problems.  First was it became detached.  I re-attached it with some silicon adhesive.  I'd prefer to have used Shoe Goo as I know it is perfect for this.  I could live with the occasional re-attaching of the insole, but then the lining on top of the insole came off and I knew that would not be easy to fix.  So, I'm back on Amazon to find another pair.
I used these shoes about twice a week.  Admittedly I have no idea how long a pool shoe should last, but I'm thinking it's should be longer than a year.  2 sounds about right.