The St. Cloud crews are only operating crews, conductors and engineers that operate between there and Winona.
The Onboard Service crews are based in Seattle (7/8) and Chicago (27/28).
My own experience, having ridden the Builder quite a lot as it is my main way east, is the Seattle based crew members on 7/8 are usually pretty good, the Chicago based ones on 27/28, are a lot more "variable" shall we say. Including the aforementioned cafe LSA who didn't open up on 7 until near Milwaukee (and who also took 3 hour meal breaks).
I've been riding the Builder for 30 years and my impression of the Chicago based people on the Portland section hasn't changed much over that time