Easily, the most used prep aid. The autofill has saved me hours. I was recently reading the Angry GM's post about managing combat and this sheet takes care all the mechanical things in the game, allowing me to have very smooth combat sessions.
I hope for an update sometime soon, to get the other pieces working but it, currently, in no way holds me back. (I thought initially of giving 4 Stars because of those unfinished parts, but that seemed like a dick move because it already solves so many issues).
Nice work Shwaffle!
[5 of 5 Stars!]