LTE coverage isn't that great. When driving I notice my iPhone constantly switching from 3G to LTE depending where you are. This has a significant affect on battery life if you're in an area where the LTE signal isn't that strong.
That said, I never turn off LTE or Bluetooth and my 5 lasts the same as my 4S did, which is basically the whole day.
LTE near Broadway/Cambie.
LTE at home.
3G at home. Surprised at the download speed.