My fiance Tracy has always worn gore-tex socks on rainy days on tours. Last fall, we were riding through 2.5 days of rain in Yellowstone and she began to wonder if there was another option. She likes to only tour with one pair of footwear, so constantly wet shoes are a bummer. Does anyone have experience with any waterproof shoe covers that will fit the athletic shoe style cycling shoes? She wears a shoe similar to the Pearl Izumi X Alp Seek. Thanks in advance for any suggestions.