If they will run on a 45 mm track and aren't too big for the tunnels etc, why not?
Rgds Ian
If you're referring to the Jim Beam decanter set from several years ago, they are much larger than G-scale and their wheels don't turn, so there's no way you could use them for an actual operating train.
We have one of those sets in a display case at our clubhouse. The set is close to 12 feet long with the engine and tender.
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