ETI have been manufacturing an XLR version of the Quiessence for years. It hasn't been on any price lists or advertised openly as there wasn't much demand for it.
But be assured that in the near future ETI will be releasing their very own XLR connector and the QXLR will be commerciallized in the Q100, 500, 1000, 3000 and reference range.
Have a look at their new site. you can send in comments and questions also.
eti-research.com.au