I commute to my office 11 miles one way with all cycling specific clothing just because its more comfortable. I always use padded cycling shorts under my windfront nylon tights in winter and under regular shorts in summer. I use wicking layers under a cycling jacket and in summer I just put on cycling jerseys. I have a shower at my office but only use it in the summer. I work for an engineering firm that is very fitness friendly with lots of mountain bikers and gym goers but no road commuters, (Yet).