Always SPD for me. Started with some combo flat/SPD pedals but truth is I never use the flat side. Recently went with some new pedals that have the clips on both sides (Shimano PD-T700) and flats. Recently I have seen the Shimano sandals, tried some Keen sandals once but just didn't fit my feet. Thinking about buying the Shimano sandals, anyone on here have any experience with them?