Not a lash-up, but did try it with a Legacy switcher engine and a MTH in conventional not coupled together to see if it would work if coupled together. The MTH ran slower then the Legacy and the Legacy kept pushing the MTH. Tried several times, but gave up afraid that the Legacy would push the engine off the track or run over the coupling. So for me, if they were coupled together as a Lash-up, wouldn't work.