mine go on and off the loco indoors
i like the details-especially an oil drum or some contrasting color item
tip from me to you-
be mindful of the steps on the end bolsters-these are styrene-are delicate-and if you use LGB screw type connection terminal clamps to the track-they can catch the very low hanging steps and break them-
ditto the little hose brackets-even with careful handling -i have dislodged one due to the way it touches the Styrofoam cradle
other tip-on my first run, 2 truck shay-while the smoke unit works, and rather well at high voltage-it appears to leak from time to time-into the engine and onto the front truck
-but im not sure if its due to poor seams in the plastic reservoir , sloppy filling on my part, or what-but at times it can spread quite a bit of fluid -obviously with LGB fluid nothing will be damaged -but with lamp oil bbq concoction, there might be residue