I don't what you think but these men's shoes from FL look a little girly to me
http://llnw.thesims3.com/sims3_asset/sims3_asset/media/shard000//shard000/382/680/007/00/screenshot_original.jpg"width=600"
The pirate swimwear and boots
http://llnw.thesims3.com/sims3_asset/sims3_asset/media/shard000//shard000/400/680/007/00/screenshot_original.jpg"width=600"
The other pirate swimwear and flippers (Edit: technically this was his sportswear but it's the same as under swimwear). Flippers appear in both male and female in all categories except sleepwear and possibly formal. It's probably meant to be that way but at least 10% of my sims have flippers for everyday without insane or inappropriate traits. That's not proportional to the number of shoe types ... and definitely higher than the average in RL!
http://llnw.thesims3.com/sims3_asset/sims3_asset/media/shard000//shard000/379/680/007/00/screenshot_original.jpg"width=600"