I too managed to use the short 9.0.2 jailbreak availability window to jb my phone my iPhone 6. While I'm not, so far, terribly impressed with the features of iOS 10, I do worry that (as happened to my last phone) something will eventually kill it so hard that I have to restore from a backup and get the latest iOS which won't be jailbreakable. I simply couldn't function nearly as well without a handful of now-crucial-to-me jailbreak apps.