yes i did on 5s and it feels a lot faster in my opinion. It just a bit slower then my iPhone 6s on 11.4 which is a big step in my oppinion. Also things like the Keyboard popping up are much faster and dont annoy anymore. I just fell like the app store app got a bit slower but I seriously dont mind @ all. And since its stil beta 1 im very Happy!
Thanks for the response. I appreciate it. I have an old 5s and use a 6 for work so that makes me look forward to the update. I really like the 5s and use it as an iPod Touch so this will be most welcome.