Switching to nipple style water, how hard to train?

I am so tired of my hens kicking their shavings into their water dish. I have tried a couple of different styles, and by the end of the day it's either completely full of shavings, or they have dumped it because it is full of shavings and they are looking for the water. I think my last ditch effort to keep water clean for more than a few hours is going to be to swap to the nipple style. All of my hens are a year or older. How hard is it going to be to train them to use this style instead? I am particularly interested in the Omlet brand one. I live in an area where we can get temps in the negative 30s to 40s for several weeks on end in the winter, so I need something that is going to survive both the heat of summer, and the extreme cold of winter.