I got the same sandals in April for the rainy season here in South Florida. Now it's been a God sent for the summer heat! I'm able to have the upward stroke for those accelerations on the intersections or when the head wind tires my legs. I recently used my old pair of close SPD shoes in 88* weather and even thou it felt a little better performance wise, the heat inside my shoes, was noticeable hotter compare with the Keen sandals.
They serve now dual purpose, rainy days to dry faster and be comfortable in the train and cooler feet during the summer months (10 month out of the year).
I did have issues first with the spd cleats, (one kept coming loose). I changed the metal bracket and screws (from phillips (included) to allen) and used blue locktight and all is good now. Double O