I do, however, I do not think it is needed.
All my beers follow a similar mash schedule...just to keep my habits up and I am familiar with my process. Since a few of my beers do better with a protein rest, I do it for all.
I have tried golden promise in a few beers (not usually german's though) and I did not find a difference between with and without the protien rest.
So in my opinion, it is up to you!