I think I have tried just about everything to achieve dry feet. Basically, it is my belief that if you are not wearing rainpants to direct the runoff from your legs over the top of the waterproof sock/shoe cover/totes/ etc, in heavy rain you will wind up with water going down the tops and being trapped by your cover of choice. In the summer it is warm enough that that is not much of a problem, squishy, but not hypothermia inducing. Spring and Fall rains are different. My favorite solution is wool socks topped with either plastic bags for that "classic Fred or Freda" look; or a pair of Sealskinz socks for that $45 look. Both are worn with SPD sandals. The sandals may get soaked on the ride to work, but at least they are dry when I get ready to head home. I've worn that combination in the rain at temperatures down to 40F. Using the sandals for commuting spring thru fall works well for me. Now if I just could get the cleat to work on my road bike...