@jkbrwn imo with a nice suit, dressier shoes will keep it looking nice... the wrong shoe could ruin the suit... it's not possible to be half pregnant
To wear with both suit and casually.... I have these Alden Bronco Blutchers on a military 379x last... work well with a suit just about and can also be dressed down with stuff like WW2 jeans, white socks of course and a Sun Surf shirt... I see the price has risen and is ott... so Sanders military derby is worth a look though I've never tried them on