The bar is a lot lower; sure, you might want to be able to use git, but if you're only using it enough to interoperate you don't need to know how to do fancy stuff and can get by with a subset of common commands (if you only clone, pull, commit, and push, then you can just about s/hg/git/g) and ugly fixes (why learn to rebase when you can make a fresh clone and hand-pick changes?) without feeling bad about it.