I think perhaps I just don't have very sweaty feet. And I think this whole cycling sock thing might boil down to "your mileage may vary". I do have several pair of UA socks, and to be honest I just don't find them that comfortable to wear. I've worn them when cycling occasionally and I just never really noticed any difference from my regular cotton socks.

Now, I do own several pair of the UA boot socks and I can tell you those make a world of a difference - because of the way the compression is built in, I can wear a heavy set of boots for 12 hours in the snow and not have cold sore feet.