Attached below is ActiveGrid (aka LiveGrid) and associated demo files.
ActiveGrid is specialized grid that displays a view that is backed by an active buffer. The supplied ListStore configured with a PagingLoader is used as the active buffer. The grid manages loading and paging as needed based on the scrolling of the view and its index. ActiveGrid will also prefetch data as needed as a background task so that user scrolling can continue with minimal interruption.
There is limitted docs and it is still very beta code - so please test and report back any issues/bugs etc.
Online demo here... http://www.rednels.com/ActiveGridTest/