I was :-1: on this. I think that it's overhead that I don't want. I haven't found myself needing `FactoryGirl.lint` -- usually if a factory is invalid I can deduce it from a test failure. `fast_spec_helper` won't require `factory_girl_rspec`, so it's a non-issue for those cases. However, every time I'm hitting `<leader>-s` to run a targeted spec, the lint will run -- which I think is a surprise in my book.