Looks like the new Planner case study is up on the Quantiv website. http://www.quantiv.com/news/a-planning-story-hotel-chocolat/

If you want to see some really slick Sencha ExtJS implementation, check out the video at around 1:24 and you will see our dual hierarchical tiling grid that scales to any side of data and our heavily customized WSSI grid with Excel style dependency graphing of calculations.

RS