I've been wearing nothing but Moab's for going on four years now. They're immeasurably comfortable, relatively rugged, handle water/mud very well and offer tremendous support in a small size.
Carrying no more than 25 pounds backpacking I see no need to wear a higher length mid or full on hiking boot and I love having shoes that can do double/triple/etc duty from on the trail, to around town, to doing some light biking. I've always been a fond fan of shoes that can serve in every situation and these fit the bill beautifully.
Over the summer/fall I beat these shoes up considerably outdoors instructing each day. Only one pair I've owned has been given up, thrashed after 2 1/2 years and even then it was only because it LOOKED beat-up, not because function or performance had been compromised. Go for it, you'll love them.