Solely addressing the jobs question, there are more of those for Rails than Django overall, but based on general listings, the market in my city, and announcements at a (well-attended) local users group, if one had Django on his/her resume, one would be courted by a number of willing suitors.

Django/Python also seems to be disproportionately represented (relative to the general market) in HN job listings, so there is plenty of interest and opportunity here, too.