Ted is using in production as I know (corrected me Ted). I'am as http://www.shinetechchina.com/softwave/case_study/Contacts-M-S.htm and some others.
Ron the path to other config files is configurable with properties usage. I'am thinking having the possibilty to embed the provider.config in the ibatis.*.dll For the slqmap.config or the dao.config, we will see. -Gilles