Keith, Yes I follow a theme for the most part. Western Maryland, but I do have some B&O since I grew up along the B&O. I do have one PRR GG1 that I can't run on the layout because it takes 072 curves, but I think it is a classic. I also have a NYC J1e Hudson because I think it's a classic also. It can run on the layout if I want to throw theme to the wind. That's about it.
I have seen a list of the railroads that bought the Decapods that had been ordered by Imperial Russia and cancelled after the revolution, and I never saw a Canadian railroad in the bunch.