You can, but as with any type of software update, beta or not, there are risks. It's up to you to decide if the risks are worth it. I have it on my main, but I backed everything up before installing. Then there's the chance you might not even be able to get it due to limited openings. So, if you can get it, awesome. If not, it's because there's no more openings.
I've encountered a couple of bugs. I noticed earlier today that my Always on Display (with it being set to show always) turned off a couple of times. Then the fact I sometimes have to tap "clear" twice to clear all notifications.
