Uh, no, you actually couldn't just wear a flip-flop because flip-flops are the least user-friendly shoe ever. There's like, one tiny bit on your toe that keeps it on- or rather, that *bleep*ing doesn't. I don't know if flip-flop wearers train for years in secluded mountains or superglue the dang things to their feet or what but flip-flops do not function properly, the design is fundamentally flawed in a way that makes them completely unusuable. I know I'm just being redundant here but I really can't emphasize enough how much you literally cannot "just wear" a flip-flop. They're pretty much designed just so that you can't wear them.