I just received the keyboard case today. It is going to take time for me to adjust using it. I've always been a one handed text and phone user. Lack of a numbers row forces the use of 2 thumbs, which leaves me with sweaty palms and fingers due to overlapping my hands. Arrow keys would have been nice as well. Especially knowing that both my thumbs would be occupied with this keypad.
This keyboard sucks on tempered glass. If you must have tempered glass on the note 5, then don't even waste your time buying it.
Overall, I text faster and cleaner using this keyboard. Would use it for emailing and explaining myself to the wifey. Would take it off for everything else.