Personally, I have an easier time identifying as an ally than I do as queer and that's a problem I should probably work to overcome (given I am, in fact, attracted to all the ladies). I think being an ally is great, but the best way to do that is really to shut up and listen to queer people, not invent ways to give yourself a gold star for being an ally. Your reward for being a good ally isn't the pat on the back by your straight/cis colleagues, it's a better relationship with your queer ones.