In my company we are in great difficult for this reason: programmers
are
the only capable of editing an SLD document with good proficiency but
they
are busy developing the application that will use it, and the GIS
people
has not all the XML and WMS knowledge needed to create more then the
simplest style.Maybe SLD is not so much used today?
I don't think so, it seems to me very flexible, but as every new
starting technology it does not have proper tools yet. We are facing the
same problem now, for skilled GIS staff it is very complicated deal with
XML, and programmers should be doing other tasks instead styling maps.
To be honest, even ArcXML (ArcIMS language) does not have such tools, at
the end it is necessary to manually edit the style for complex
symbology.
Hope this change in a near future with new powerful SLD tools.