The message is very clear that the touch devices (pad, mobiles and whatever else is in the making) are definitely here to stay. People would be using more of these than laptops going forward. So it becomes very crucial to present content on these devices which is intuitive and fast. And with 3g/4g technology BW speeds might not be a hindrance to this growth.
That said I understand Xara has a challenging task to make its product RWD friendly. But I feel the result would be very exciting and rewarding to say the least.