ebXML 4 Ruby?

Does anybody know about anyone working on an ebXML library for Ruby?

I know about the precious soap4r by Hiroshi Nakamura
(http://dev.ctor.org/soap4r , the web site is down this moment) which
is part of the default Ruby libraries but, while being very effective,
in my personal opinion severely lacks documentation. I can't manage to
feel comfortable in reusing it for something more than prototypes, so I
don't feel like extending it to get to the ebXML support I need.

Have you got any advice? Thank you very much in advance,

Gianfranco