I like getting the extra screen real estate with the one button nav. Luckily no one has really pressed hard. More like they start to push a little and go huh?
the only thing I don't like about the one button nav is the back functionality. it doesn't seem to minimize the keyboard when I want to. maybe I'll play with it more
I'm no expert, but it should be able to take a little bit of abuse. My Honor 8's fingerprint sensor also doubles as a button so I very often click that thing like nobody's business!
Some dust got stuck in the crease of the fingerprint scanner so I tried to get it out with the corner of a post it. Since it's solid state I assume this shouldn't bother it?