Well, I'll be honest, I have high hopes for this phone. I have a 128gb aluminum 6p being delivered tomorrow.
I am perfectly happy, with my 6s plus...but Google fi caught my eye. My daily route makes it so that I am in wife coverage all but an hour of my day. I have unlimited data with T-Mobile, and my current bill for two lines is way too high for what I use. So I figured I would give it a try. Everyone I have met with the phone loves it.
I don't expect to get the same battery life, and I know I'll miss OS X integration and apps like fantastical if I end up keeping the 6p, and parting with my iPhone. But I have used swapped between the iOS and android for years, both have their advantages. The google integration and flexibility of android is enjoyable.
If the phone matches or even comes close to the reliability of my 6s plus, I'll be sold. The savings on my cell bill alone would warrant that. Honestly, I have high expectations for this phone, so we will see.