I thought it was really good, especially for something on non-premium cable. I thought they actually had quite a bit of gore, more than I thought they would. Definitely something I'll be tuning in to each week. I've only read the first comic, but I think both comic and show do a good job of balancing the horror elements with character development.
As far as the whole character issue, I think it wouldn't be too realistic if there weren't at least a few black characters, since it's set in Georgia.
What would Snake Plissken do?