"I'm wondering how Dyn is taking this. "

I use dyn as well as run several dns servers in different places [1]

My reason for not using this is that it's being offered by google and the obvious fear that they will decide one day to stop offering this, supporting it, or improving it. As I am experiencing now with google voice for example,

[1] Since the mid 90's actually learning from this book:

http://shop.oreilly.com/product/9781565920101.do