Be careful with those cleats when you are walking on a surface that you care about (hard-wood floors, marble). We're all cyclists here worried about our cycling equipment. But the rest of the world worries about scuffed floors! They will leave marks!

And I second what Veronica says about the bed of a truck. I slipped on the bed-liner of my husband's truck and fell out, off the tailgate, boom-crash to the ground! Big truck--big biff! OUCH