I'll add my two cents as the original author.
The page is still useful, the package needs to be changed from
git-bzr-ng to just git-bzr which is still available in Ubuntu (utopic)
and provides the desired output.
As stated, the instructions should say "git clone bar::lp:inkscape" etc
etc and include the caveate about creating new branches on launchpad.
It's also be nice to mention a polite request for inkscape not to end up
on github as it can be confusing for new developers who look to github
first and may think development happens there.
Martin,