[NTG-context] Table Esthetics (and XML)

Hello, I'm a big fan of the LaTeX booktabs package - I find tables created using it with it's 'toprule', 'bottomrule' and clippable 'cmidrule' commands the most satisfying solution I have come across (see attachments, especially 'table1.jpg'). After consulting the archives of this list, it seems clear, that ConTeXt does not yet have any package of that sophistication, but I'm dead set on writing my thesis in XML and have ConTeXt read it ... therefore I'd like to soclicit your preferences and ideas on how to pleasingly format tables - how do you do it? Thanks for any input, Joh