Brush Type two's? They were my earliest memories of railways, rail blue examples shunting coal/ grain on the crossing at Louth, which at that point was a freight only branch from Grimsby - a far Cry from the GNR Grimbsy/ Peterborough/ London main line it once was.
That said its the other type two's that really do it for me.
One of the concepts that is kicking around for a future layout in 'O' gauge is "Mc Rats on the Clyde" which yes, would be full of sulzer type two's, and it would be based on half of Motherwell shed in Green/Blue era......
Lot's of old ex steam buildings with smelly diesels. I'm sure its been done before