I would also be interested to hear about this in what has become a 2 horse race analytics race.
I have never seen it in action however I can see why it would be very compelling tool in in a small data driven business. However for my business I we would need the hosted solution - which whilst nearly half the price of Adobe would only have 30 custom dimensions. I don't know about your company, but we use around 150 of these. A similar story with events.