I scored a pair of Chota Caney Forks last year at 'copia.  Took 'em way up north to WCPP and absolutely loved 'em!  They drain well, gave good traction & support, and best of all, kept almost all the sand, grit, and gravel out despite long, mucky portages. [smiley=thumbup.gif]

Only downside:  I used the optional "inserts" to give a snug fit, thinking this would be necessary on poor footing.  During the first wet portage with sucking bog under-foot, the inserts shifted all over the place in the boot.  When I hit some steep down-hill, they started rucking up in the front of the boot and rolling up under my toes.  A most unwelcome feeling.  But after removing them, the boots were still snug enough, and did not shift around underfoot.

Before this I've tried all sorts of water shoes and sandals.  Some worked better than others, but all let the junk in to some degree.  The Chotas are no doubt pricey, but they've been the Cat's Meow for my feet.  Just don't use the optional steel spikes... rough on canoe bottoms ;D