Just bumped into this fantastic editor. Exactly what I was after! However, when used within an Archetype, the table editor itself works just fine, but the table-, column- and rowstyles are not selectable.
Table editor in a documenttype

the same table editor within archetype

It would be great if the table editor would be usable within Archetypes, it gives the editor the ability to add sets tables with related content on a document.
Solved: Enabling Deep Datatype Requests in the Archetype did the trick!