Yep, Foogo! I would get the straw and not sippy though. The sippy doesn't have a valve so when it gets tipped upside down or jostled in the diaper bag milk will come out.
We have the 12 oz Thermos straw cups and the Safe Sippy (which is a sippy or a straw cup as they include parts to switch to either) - we love both of those options.