Maybe, AT&T sucks a lot but that doesn't mean Verizon/Sprint/T-Mobile will be any better.
Also the other carriers are introducing tiered data too.
Neither does AT&T, currently only wifi compatible (semi-defeats the purpose but useful I guess), plus it's done through Apple.
It's gonna be an open industry standard so it'd probably be possible to hook up with Qik on Android and other video calling services.