This could rock.
*IF* they ever figure out how to package it, and if they get a decent community behind them this could be the groupware pacakge to beat.
Currently however getting this installed seems to border on pure luck.
I did a similar review.
I did a similar review of my own, strictly on OSS RDBMS systems.
Those those that touted SAPDB, I can only say, first install it then look at the security model then try to like it...
Interbase has probs with indexes, Mysql is still not a true RDBMS, (but is fast as hell).
in any case you can read my review at http://mordikyn.dynu.com