I've only had them for about a month and the stitching on some of the cloth is already coming undone.  Not a huge deal, but a little tacky.  They are comfortable (Didn't realize they were slip ons).  The biggest problem, and why I'm downgrading my rating, is that the soles are extremely slippery when they are wet on pretty much any kind of prepared surface...even asphalt.  It's almost to the point that I won't wear them anymore.  I was hoping that once the soles broke in that the slipperiness would wear off, but it has seemed to just get worse.<br /><br />Update: 10 months later they are almost worthless.  I've had Merrills before and loved them. These not so much.