To be honest, I was excited when I heard about these engines, but alas, price and lack of sound and smoke was a disappointment. They would have been 99% displayed and run on special occasions only. Been wanting to make a diorama for years on this historic event.
But, mostly because of cost. I have decided and because of mostly not a full time engine on the layout, I'm going with the HO engines and add the cars I need for display and a small diorama of the event.
Kudos to those that will purchase these and hopefully come problem free.