Besides being hit by a bomb my Chaco's and I have been through it all: slipping stones in the river, trudging around the college campus, hikes in the backcountry, strolls through the park, on bike rides (either on my feet for the short rides or strapped to the rack for comfort when I get where I'm going), having the strap chewed through by the dog (and sewn back together), and even complimenting my gown at college graduation.
This legendary outdoor product lives up to all the mythology you've heard about them. In some ways, they're not even a sandal-- more like a boot-sole with straps. When I think of sandals I think of loose-fitting, non-aggressive footwear-- not with the Chaco's. You'll think you have a thick, rubbery callous protecting your tenderly wonderful bare feet while hiking around. While this does cause some major perspiration on the sole of your foot you also move confidently with the assurance that they are firmly attached (perhaps the "fits like a glove" saying is passé and should be updated to "fits like a Chaco").
Another aspect of the fit are the straps. I've read some reviews about how people have problems frequently adjusting and fiddling with their straps, always wanting to loosen and tighten endlessly. Just get them how you want them and leave them alone! With a few timely minor strap pulls when you first began to wear them having to make adjustments will become a distant memory (I seem to recall last adjusting them about 4 years ago but perhaps it was just in a dream...). So c'mon people-- if you can brag about scaling peaks, rafting rivers, and epic camps you should probably be "outdoorsy" enough to pull a strap.
Perhaps the staple of the Chaco lore is the durability. I've owned my Chaco's going on 6 years now and the only time I had even dreamed of having anything done to them was when the dog chewed through the strap. Chaco doesn't make the same pattern anymore so I opted to sew them together and retain the celebrated antiquity of my Chaco's. Probably in the next year or two I may have them resoled as I've kind of worn them down in spots due to poor walking technique but even this is more of a investment then a real necessary fix at this point.
The only two upgrades I would suggest to Chaco would be a perfume emitter (the current perfume coming from the Chaco's is quite the burly stench) and an odometer to track the miles I've put on them (I would suggest at least four tickers to go into the thousands of miles). Even when the on-board odometer eventually rolled over I'm sure the Chaco's would still be kicking.