Nike+ SportBand Reviews

I'm looking into getting a Nike+ SportBand to log my miles/distances I'm running. Does anyone have one? What are the pros and cons?
I am getting it mainly because I really need an iPod as well, but don't want to shell out the money for a nano or touch when I plan on getting an iPhone in the near future, so I'm leaning towards the shuffle. I still want a way to calculate my distance/pace though.

Suggestions/thoughts/reviews?!

Thanks!