Oh ho! That will be something to see! If they run the #9 by itself during early or late hours (the same with #12) and then double-head them during the peak hours they should be able to save on wear and tear as well as provide an extra attraction!
I've said it before that I would eat my words if Railstar and the CHS proved themselves. So far I have (happily) been munching away! I am REALLY looking forward to this season!!