> [C]an you tell me how to do the equivalent of "git log -p"? Last time I checked (SVN 1.8) that's not very trivial.

svn log --diff, added in 1.9. Also doable with a little (est. < 10 lines) of shell scripting.

> Or how to revert a commit? IIRC that requires a merge.

git and svn disagree on whether history should be permanent or not.