I did eagle creek years ago with a pair of standard Teva's. They worked fantastically, but they were also well over a pound for the pair.
Since then, I have been using crocs for water crossings, but I have never been quite happy with their stability and fit... they just dont work all that great for my feet.
I just bought a pair of Teva Mush Universal sandals which pair a cushy flip flop style footbed with Teva's original sport sandal straps. So far, I have liked them, but I haven't put them to trail use yet. (just got them this week)
In size 13, they come in around 2oz lighter than my crocs. Sweet!