Looking at the video I get a flash of a plastic barrel cut in half. Looks like one is used for food and the other is the waterer. I have to agree with you uncle, those won't last long as the material is brittle and will break. I used a 55 gallon one of those, coupled with a hose adapter to a line of galvanized pipe with pig nipples along a board wall of my
fence. Gravity fed the water from the barrel to the nipples. If you are willing to leave pressure on at all times, the same set up could work that way, I only recommend gravity fed from a barrel because then I only have 50 or so gallons of water if a nipple or pipe gets broken.
I really like Walter's series of barrels fed by spring, that would be pretty sweet to have, but my bottom land doesn't come with those - so it goes.
Also, even though I'm in Montana, my pigs get a nice wallow spot going in their area, they do like their mud.