A number of the thousands (!!) of people who have downloaded the XComponents have asked me about point-and-click connectivity from Xcelsius to data in the BOBJ platform because they are finding it a little too hard and a little too time-consuming to do what they need to do with QaaWS or LiveOffice. I did think about starting a project to do this but then events overtook me and Antivia created its Xcelsius WebIntelligence Integration Suite).
XWIS provides "intelligent" Xcelsius components which understand how to directly connect to the BOBJ platform, preserving all the slice, dice and drill already built into the semantic layer. As far as I can tell, ANY Xcelsius project which connects to the BOBJ platform will deliver more functionality at lower cost using XWIS (even when you factor in the cost of the XWIS solution).
If you are interested there are more details and a video demo at the Antivia Web site
(disclosure: I liked XWIS so much that I am now acting as a advisor to Antivia on its future development)