I guess just have different types in any one area. But then, if your chickens are anything like mine they'll all want to use the same water cup and cry like they're dying when it stops working, even though there are plenty of other spots to drink from
I traded out my cups for all horizontal nipples, it was too annoying in winter with all the freezing. But I'm a ways north, you may not have as much problem with this where you are.