I bought my One new 6 1/2 years ago, and it's gotten pretty heavy use daily since then. The "rubber" backing is not worn and the whole remote looks new when I polish it up every now and then. I'm using the original battery (yes, with the blue label it), and it's never swelled. I remove the battery when I clean the remote, so no issues noted there either. I still only have to charge it every 2 weeks. I only charge it when the icon turns orange. The only thing wrong with it is the motion sensor is essentially useless now. My wife and I simply changed our behavior and just swipe the screen to wake it. All in all, I think I got pretty lucky with such a durable One. It's my understanding they don't make 'em like they used to.
A couple years ago, I bought a refurb One as a spare, assuming one day my original one would crap out. I intended to just leave the spare in the box. One day, on a lark, I decided to get out the spare and discovered it had the black screen issue. I'd had it too long to get my money back, so I bought another refurb (~$100). I immediately checked it out when it arrived and it worked fine. I sync'd it with my software to mirror my current One. Since then, if I make any changes to my system, I update both remotes. (The software doesn't see the difference between the two remotes, so I keep the same profile.) So, expecting my original One to quit on me some day, I keep the spare in my media closet. I check it periodically to see how the battery is doing. Since it doesn't see any action, I only have to charge it about every 6 weeks or so. On a rare occasion, I'll actually use the spare (like in a case where the original is recharging).
If you're a big fan of this remote, I recommend you do just what I did. I'm still quite pleased with the 6 1/2 year old One, but I have peace of mind knowing there's a backup. I did notice the backup has a slightly lower resolution screen. The base doesn't have a light on it (but the base stays in a box). The rubberized backing on the refurb is different too.