Sounds like a false dilemma. Mercurial is here now, is powerful enough for a majority of users, is easy to use, and has an introductory book as well. After reading it and Spolsky's site, I picked it up in a few hours.

I think git is a good fit for people who find version control theory interesting, a endeavor in itself, or have complex workflows. For the rest of us, who simply need to work together (sometimes offline) with multiple synced backups, the complexity of git is too much.

Hg, for its flaws, keeps the simple things simple. I think the constant push from above to use git is a disservice, and I wonder if there will be a backlash at some point.