I like these things, the problem is that they all assume your spreadsheet is organized like an SQL table.
While you'll generally have a set of rows with a (more or less) consistent set of columns, the parser is capable of detecting blocks within a sheet that have to be treated differently (i.e., they go into a different "table"). This is why we are looking for beta testers - we need more of these scenarios. Care to join?
In one hand, if you're organized like that, you come up with a schema and follow it, why aren't you using SQL directly?
On the other hand, by using spreadsheets as tables you lose 80% of the spreadsheet's flexibility and powers.