I got one shortly after I got the Switch and have used it a lot since then. It's still going strong. One thing to keep in mind is that the sticks are known to have a problem of creating the white dust from wear faster than most other controllers do, so it's important to clean this out regularly. Similar to the D-pad issue, this seems to affect some controllers more than others. I use a microfiber cloth to clean away the dust and it works fine. This dust can also cause a drift issue so it's good to keep it clean. I've run into the issue a couple of times but was able to fix it with a jet of air into the stick, which I'm guessing cleared away the dust.
As far as the D-pad is concerned, I did notice the extra sensitivity a bit when I first got the controller, but it doesn't seem to happen any more. I dunno if that's because I just needed to "break in" the controller for better use, or maybe it's just the way I use it. But I've used the D-pad a lot and have had no issues after that initial period.