For a list of known remaining problems, so that you can determine the notacibility for yourself, please see http://pike-svn.lysator.liu.se/twiki/bin/view/Main/RepositoryConversion and http://pike-svn.lysator.liu.se/twiki/bin/view/Main/AutomaticComparisonResults.
However, we are also waiting for the release of git 1.7.2, since the current stable git does not work with the converted repository.