These are great!  ...and you can't be beat the price.  They run a bit short so I won't be able to wear too thick socks but I don't think that'll be a problem.  Purchase a 1/2 size bigger if you want to wear heavy socks.  They're still pretty comfortable and seem to be made well.  I haven't worn them in the mud and rain - yet - so I can't comment on the waterproof aspect.  All-in-all, though, I think these are great for the weekend out doors.
Okay, so I've finally worn these through a wet/cold winter in the NE.  People, these are NOT waterproof!  It'll take a while for the water to seep through but it WILL seep through.  So disappointed words cannot express.