Are you also proposing that we read Perl 6 docs with info? Please say no.

Well, the point of the OP was that if you were able to use an existing generic doc tool, then you'd benefit from their existing tools. To answer your question though: "no", but it could be an option, I suppose, if you chose a tool that generated info docs. Note, of course, that most generic doc tools can generate various kinds of output, including plain text.