I think you are mistaken. We are starting to institute procedures, and the boss is very reasonable. He'll accept a solution in which the workflows are more natural. He has accepted procedures / choices that I have advocated in the past (with well-reasoned arguments in support of my choices, of course).
Arguing that the 'main' repo has to be git is a tough sell, but I think we'll get there eventually, once we show how much easier experimental branching, disconnected operation, distributed nature etc will be advantageous to us.
The git-svn solution is pretty good, because the main repo will be svn, and people who are used to svn (and like the restrictions that come with it) will be happy as well. Git users will also be able to get all the benefits of using it..