I have, it's amazing. The only thing it's missing is drag and drop to outside divs. Other than that, it's feature rich, very customizable and the best from all other js grids I tried.
At GeoSLAM (joint venture with CSIRO) we sell scanners and software based on the Zebedee (ZEB1) and a mechanically rotating version (the ZEB-REVO [1]).
The rotating version is easier to use (don't have to worry about nodding the head too fast or too little) while still having the same cost/speed advantages over terrestrial scanners.
Talk of tag/DB based file systems always reminds me of WinFS[1]. Microsoft were trying to build a tag (well relational database) backed file system since 1990... eventually abandoned - presumably due to back-compat issues.
I think the internet is more fun now - there is the boring mainstream but there is also an absolutely huge lunatic fringe. The web now is more chaotic than in 1994 because its so much more accessible to chaotic minds now. In 1994 it was all just monty python scripts and references to barney the dinosaur.
[1] http://www.tabulator.info/