I mixed things up with the no-knead bread this weekend. I used 2 cups all purpose flour and 1 cup whole wheat. I found I had to use less water - about 1 1/4 cups - and that my boule was also smaller.
My technique has been to mix the dough with my hands and add the first cup of water all at once. I then add the remaining 1/2 cup of water gradually, until I get the consistency from the video. This is how I figured out how much water to use for the whole wheat loaf.
And, just because I think this one turned out super pretty: