It depends on what you are looking for in a running shoe. If you want padding, they are not the best. If you are looking for a minimalist shoe, then I think they are really good.
I played soccer in high school and ran in Sambas then, but they hurt my feet because of the lack of padding and because we ran on the pavement. Now I know that my running form was wrong, and running on pavement is never a good idea.
Now, years later, I started running in my Sambas again. When I run on the pavement, the pounding does still take a bit of a toll, but I have learned to avoid running on pavement as much as possible. I do most of my running on gravel trails, and my Sambas work great for that. I like my Sambas, and will probably buy another pair to continue running in them when the current pair wears out.
I also wear my Sambas to work and when I go out, and never get tired of how they feel. Once they get broken in, it's like wearing a glove.