River City 3 Railers has had DCS on our modular layout for a couple of years now. We (obviously) have had a ball running our PS2/PS3 engines. We had not, however tried running conventional engines. Got "The Book", read the section on running conventional, and had a great time with my WbB engines last night.
This is one aspect of DCS that I haven't heard a lot of talk about. DCS even makes my inexpensive engines more fun to run!
Gilly