those are going to be miserable to spend a day walking in, much less every day. they are not made for walking, they will put your ankles at an awkward angle and click every step. walking around all day in them will wear your cleats down exponentially faster than you would otherwise. if you already bought the Sidi's (since you said "too late" 2 minutes after your original post...) then do what others have suggested, you gotta bring a pair of sneakers.