I like it.
I like different and weird, funky stuff.
I figure this entire website is all about doing things differently from the normal accepted, run-of-the-mill everyday stuff.
So...I like it.
Yeah I'd just fill it with a garden hose...or...
Years ago I made an adapter to hook up to a regular old garden spigot, that reduced the outlet to a brass 1/4" compression fitting, with a small ball-valve, a strain relief spring, and a length of 100 feet of black vinyl evaporative swamp cooler type plastic tubing.
Why?
Well at the time my motorhome was moochdocking at a friend's house, but the water supply was about 80 feet away. It was a pain to unroll 100 feet of drinking water hose, hook it up to the coach tank fill, go back to the spigot, turn it on, then stand by the motorhome, monitoring the fill, then wait till it spilled everywhere, then go wind the hoses back up, usually dirty, heavy, and bulky, and store it all away.
The very lightweight poly tubing made the task super-easy, and yes, it did take longer, but I learned how long it took and if it DID run over, it was only a trickle, not a flood. Plus the small poly tubing, inserted deeply into the freshwater fill opening, did not require or cause 'water burping'. I never drink water from fresh water RV tanks, its only for cleaning, showers, bathroom water, etc.
Winding the poly tubing up was very easy, and the entire thing with valve, fittings, and trapped water probably only weighed about a pound. I tied it up with a velcro strap, and tossed it on a shelf. Easy-peasy.