This has been the best pair of boots I have ever owned.  I work outdoors with concrete, in mud, dust, and rock.  My boots are get wet externally every single day, and also get wet cement and concrete on them almost daily.  They have lasted 18 months so far, and are just now about to be retired.  I have kept about a bi-weekly regimen of neatsfoot oil on them, and that's about it.  I never had any issues with water infiltration.  The leather is still in exceptional shape, I'm only replacing them because the welt is cracking and starting to let water in.  Other than that I have had no problems with them.  A pair of boots typically lasts me 8-12 months, even other Wolverines.  Also, comfy as all get out.