Or are those gators?
Those are boots. I didn't ever examine them closely, but they actually look like the type you wear fishing. Anyway, they appeared to serve him well.
If you view at original size and then click on the photo again to enlarge more, you will see that they are Oregon Research Gaiters over a pair of regular mountain boots.
Nice investigative work. I never would have thought that.
...they sure look funny to me!
Nice spotting Fred, but they are actually Outdoor Research gaiters.