Sam, i use a lot of nail plates also, it's cheap insurance.
I had recently roughed out a place, all 2X4's and started doing just that as a final touch.
I use the deeper variety of boxes for fill, so many are almost as deep as the 2x4.
So looking around, this would mean every receptacle and switch , which is a lot of nail plates.
One would think it's a non-issue, in that the device box is viewable from one wall side for those who renovate, hang pictures, etc.
Yet it is still a code i'd like to address in an economical manner.
So to the BB"s i go, and ask...
Back when he was around, Bruce Lee was asked what style he was, his reply was " I am all styles and none" .
He had studied all, and took the best of what he found.
So, in that same vien, i ask...