My 20-year-old could carry off Eternalopt's suggestion, but I couldn't. It's either age or inherent coolness that makes or breaks it isn't it. ;)
I quite like your first suggestion, OP! I'd happily traipse around in them but I realise (the sole!) that they'd not be considered the most stylish option. I'd rather wear those though and walk comfortably than something too flat that causes me pain if I have to walk a bit. I am of the opinion that inappropriate footwear is always unstylish and uncool though. You just look a right eejit. However the gladiator ones are horrible, but I hate gladiator shoes. It's 2016 AD, not BC (badaboomtish).
The Yokono sandals all looked nice! Something from Kickers maybe? www.spartoo.com/Sandale-Kickers-femme-st10148-o65-0.php#rst