I have wood floors throughout much of my house and with the SPD-SL pedals I need to put on the little rubber booty before walking indoors. The extra support provided by the SL version has never been needed as I buy top grade bike shoes with stiff soles. I have a brand new pair of Shimano SL pedals and cleats and rubber covers in my garage as I decided they were not needed and a worry if I forget to have my cleat covers in hand when off the bike.