A couple of answers and thoughts concerning clogs. I've worn them for almost 15 years, and found that they vary widely by brand and materials. I started with a pair of Danskos with backs, and after cracking the soles on three pairs in two years, decided they weren't for me even though they felt great. They use a poly sole. I'm a big guy (6'3" 240) so shoes need to be exceptionally durable. I then tried Birkenstocks with the same results, they either ripped out or broke. I then found the most durable comfortable clogs ever made: Bastad from Sweden. The soles are alderwood with a nonslip bottom, and they last forever. I don't get the ones with backs, because once you get used to the clogs, the backs are just there for looks anyway. A bonus, at the end of the day, while mopping the floor, I just mop my shoes, too. In reference to walking funny or running out of them, I never have done either. I can do a pretty much dead sprint after my kids through grass, although running over gravel is a bit hazardous. The only problem I have, is that Bastad soles are rather high, so with shoes and toque, I'm a little over 7' tall. So I have been on the search for a clog with all the characteristics of Bastad, but a little lower. But so far no luck. I highly recommend clogs for the kitchen, they make you feel so good!
We have done so much with so little for so long, we can now do almost anything with almost nothing. Dave Marcis