Not exactly on topic, but, I successfully ran my PS3 scale wheeled Rio Grande GP-35 on our club 3 rail layout pulling a short string of reefers.
I really didn't expect a scale flanged engine to take the curves on TUBULAR track. But, it was no problem. Ran fine for quite a while at a decent speed. No sweat.
The club layout has K-Line Shadow Rail TUBULAR track. That particular loop of track has 120 inch diameter curves which I'm sure helped. Also it behaved on our Ross numbered switches as I expected it would..
This means I can run it at home on my 2 rail layout in DCC and on the 3 rail club layout in DCS. Awesome!!