Sitting in KC airport getting weak Band 26/800mhz LTE at the moment and then it goes to 3G once in a while in some spots. Nice to see 800LTE alive but surprising the airport in Sprint's home market doesn't have solid enough LTE coverage.
For anyone interested in a real world Google Fiber review from someone who actually has it, I've been working on one here...
http://www.dslreports.com/forum/r29157624-Google-Fiber-Kansas-City
Ah, you can go do Developer mode and turn it on.
Go to Settings>About Device
Tap on Build number 6 or 7 times, it will turn on Developer Mode
Go back to Settings and Develop Options appears
Can change from Dalvik to ART. (I haven't tried this)
Here is how well SG5 performs on my Google Fiber and Sprint Spark at home. The top 3 results are Google Fiber over WiFi, the bottom 3 are Sprint Spark.
https://dl.dropboxusercontent.com/u/3812896/Pics/Android/GFiber%20Sprint%20SG5.png