I've been using Inkscape a great deal for my new "we build web sites" Team Firebox offshoot -- a friend of a friend designed the logo in Adobe Illustrator CSomething, and I managed to open up the EPS pretty much no problem at all in Inkscape. It is a lovely program, beautifully made and executed with a bundle of features. What I miss most from my Proprietary Illustrator Days is tighter control of text but for pretty much everything else, Inkscape is a seriously good bit of drawing kit.
The other thing that I miss is the old skool SVG keys and mouse reference file from version 0.44; this is a single file that you open up within Inkscape. In the latest version, 0.46, the help file takes you to the web site. So I've uploaded the file for anyone who's interested, just right-click to download.
And whilst I'm here, here's a link to the online Inkscape manual by Tavmjong Bah.