Hi Will -

Glad you followed my suggestion and came to check out the site. Like I said you will find a bit on inkscape here, just use search.

Not many people have done full maps in inkscape, but many here use them for outlines, roads, etc with post work in Gimp.

A couple of posts that might interest you:
An offsite tutorial on drawing islands with inkscape
My last challenge entry using inkscape
Featured map of Heva made partially(?) in inkscape
Unfinished canal city (must get back to that...) in inkscape
Working on map basics with inkscape

and a few others. If you have any specific questions ask them, as I love trying to figure out how to do things in different applications.

-Rob A>