More thanks!
I do not know how the clear UV paints will work either, but I will be finding out. I will record the results over time in pictures, as well as report on the rest of my findings/issues/results.
And thanks for the link, shows it is possible. Gotta figure out O or S though. I might be leaning towards O due to room inside the locos. My hesitation is if I went S and had to or wanted to move indoors S would work better in a smaller space.
I need to go to a store and look at some S and O together or just buy a couple of cheap pieces.