I just use a heated dog bowl outside for water in the winter. Simple, easy and requires no skill to use or tools to build. I put a hole in the wall and pass the cord inside. In the summer I use a 2 1/2 gallon dog water thingy so I only have to fill it every 3-4 days.Ok. I think I like the idea of indoor the hen house food and out in the run water. There is a lot of wildlife near me and I don't want to invite the hungry and curious nighttime prowlers. Only issue I have with that is heating water in freezing temps. I have an outlet in the hen house, but not outdoors.
I also hate my indoor feeders. They're pvc, chickens make a mess and I can't pour a bag. I have to scoop a half bag using a small container
I keep food in the run but don't leave it out at night. I also have food and water inside the coop.
I do have a fancy vertical nipple water bucket in one run with a submersible heater in the winter... but the dog bowl is much simpler.
JT