Chris, thanks for the humor and insight in your article!
Hey, all-- First, footwear, like everything else we use, is highly subjective and personal. I just wanted to add my own perspective on the foot problem comments.
About ten years ago I started having severe back problems, to the point of not being able to stand up straight. Horrible. Much evaluation, etc, and ultimately ended up with custom orthotics. I basically haven't had problems since (if feet are out of whack, then ankles are, then knees, then hips, then back...). That said, I can't fit those orthotics in/on most sandals, and there are virtually no sandals with high arch support (not even Chacos). I have some oddball Birkenstocks that are great around town, but definitely not for the trail. What I'm getting at is that sandals can be great if you don't need significant arch support--but not everyone can pull them off. I can't say I'd recommend hiking 10 or 15 miles the first time I tried them out...