In summer around the house evenings or running errands or even some casual chain-type dining I'll wear a pair of high-end leather flip-flops or Tevas, especially after wearing steel-toed boots at a client plants all day. Ditto for if we're down south in the Carolinas or FL, or at the beach on vacation. Apparently I'm not too offensive; more than a few women have said, "nice feet" and seriously. My wife doens't gripe, either, and believe me, she'd be the first to do so. Sometime I'll just wear a Dexter or Bass boat mocassin without socks. But only at casual chain type restaurants where 90% of the clientele are dressed the same.
Otherwise, it's a polo or golf shirt and chinos or jeans, with boat mocs or casual slip-ons, usually from G H Bass or Ecco.
Usually when we go to a "nice" restaurant here locally, or to NYC for a weekend twice or three times a year for dinner and a Broadway show I'll wear a pair of Brooks Brothers chinos, and a Brooks Brothers navy blue blazer over a button-down shirt (with or without tie), turtleneck in winter. Sometimes a navy or black suit, with or without pinstripes. If I wear a coat over a button-down, I usually wear a tie. I'm kind of a "tie freak", and have lots to choose from. Diagonal stripes, rep ties, red or maroon "power" ties, regimental ties, you name it. I don't mind wearing a tie.
Dress shoes are either Florsheim, Johnston-Murphy, G H Bass, or Ecco as appropriate to "dress down" or "dress up." Yep, the "good stuff" costs more, but I have Brooks Brothers slacks, sport coats, shirts, and suits that are 15-20, even 25 years old and still look near-new.
Still fit, too.
Noah