Hi Martin, yes, this is on our roadmap.  We looked at what C1 did and found multiple performance and usabilty issues, so simply shrinking a desktop grid to the phone isn't the right approach.  Stay tuned to the blogs over the next few months for more news in this area.

I'd also be interested in what Grid features you are looking for ... Hierarchy?  Filtering? Grouping?  I am assuming super fast scrolling :)

Let me know if you need anything else,

Jason