OK, so I've been using this in my innate water bottle for over a year now. It works wonders. However a little caveat. It will hold smells and to a lesser degree, flavors. I put beer in my water bottle and even after hot water and soap, I could smell the beer when I drank from my bottle. Same thing happened when I put watermelon juice in my water bottle. So just use it with water and you shouldn't have the issue.
I gave it 5 stars because this is after all a water bottle flow controller, not a beer bottle flow controller, so my smell and taste observations are of no consequence. Works great to keep the water from splashing all over me when driving or hiking or whenever really.