It's a very good question. Several customers already requested the native touch support for Windows 7 and 8, but the lists of requested features are enough different. In one case it's only basic scrolling using fingers on devices like Windows 7 tablets, in other cases these are the ability to zoom the grid contents using pinch-to-zoom and to increase the thickness of its scroll bars to make them more convenient for fingers.
Can you tell us your detailed requirements for this functionality?