... Initially my only reservation of trying cycling sandals was that the Sandal would feel more floppy and loose than a shoe. ... With Frog cleats, they're not completely walkable, as I can hear and feel a bit of grinding when I walk on asphalt or concrete. ... With the shimano sandals, I had to shim both cleats (the pedals come with shims for this purpose) to stick out more, in order to engage with the pedals, otherwise the pedal platform pushed against the sole of the shoe and prevented engagement. ...