I'd love to wear clogs on board, but I'm usually changing planes when flying South, and, as you pointed out, I don't want to have to run in those things. Wiping out in the concourse wouldn't be a pretty sight. I just wear the sneakers, and they're velcro closures so it's easy to take them off for Security and put them back on.
I wiped out in the concourse once, by tripping over my own shoes and landing on my behind. Nothing like looking like an idiot in front of total strangers.