I love fleece - I really can't imagine going back to loose bedding now. I have two girls in a 2x5 cage, and cleaning is a breeze.
Does it stink?
Never - I poop scoop daily and do a full clean once a week. The most it has been left is 9 days and the surface of the fleece was still dry, and no smell whatsoever.
Gross to put it in the wash?
Sorry to be gross, but honestly, the washing machine in our household has washed clothes / bedding that have been sweaty, muddy, dusty, peed on, soiled, vomited on, and bled on - a bit of piggie pee is the least of my concerns!
Is it annoying to wash towells every few days?
Maybe - but I don't. I poop scoop once a day (before their breakfast) using a long handled dustpan and brush - this takes literally seconds. A full clean out (remove pigs and toys, sweep, vaccuum, remove bricks and clips, shake off fleece and mattress pad, throw in wash, lay down clean bedding, change the hay box, sort out pellets and chop veggies, return toys and pigs) takes me under 15 minutes.
By comparison, I used to have a rabbit in a pen on loose bedding - that took me about an hour to clean out each time.
Why should you get it?
It is comfy, safe and hygenic for your pigs.
It will save you a fortune, compared to the vast amounts of loose bedding you would need to buy.
It doesn't smell funny (I don't like the smell normal beddings have)
You don't get bedding all over your floor around the cage
It looks nice
In my opinion, it IS low maintenance
MapleOwl - I know how you feel. My fleece is halloween stuff too - black with skull print. Never looks messy, but can be a pain to spot poops!
As for keeping it in place - I lay the mattress pad down first (which fits inside the cage) then lay the fleece on top (fleece is longer and wider than the floor of the cage). I use a house brick in each corner to weigh it down. I also use bulldog clips in between the bricks. My pigs also use their bricks to demand food every time you go near the kitchen!