I got my GoWalk3s today. They are not the sexiest shoe out there, but I've definitely seen worse. More importantly, they are like walking on a cloud.
That said, they don't have a lot of support. I bought them to walk around London. I would never be able to walk the dogs in them (but we are up and down hills, not city walking).
I got the meshy looking uppers. I was able to see the canvas option AFTER I ordered mine. I think the meshy ones will handle puddles better.
HRH Queen Dick I, I second aMrsin09. I have a pair of the Go walk3s and love them. I am on my feet 9-10 hours a day and the days I wear these shoes, I have absolutely no sore feet or back. Days when I wear other shoes, I can feel it.