Tom, I believe IM has done incredibly well with this release. I am told they are sold out at the factory. In our store, we have sold out of most of the road names. We have a select few remaining (NdeM anyone?). Much to my surprise, the Milwaukee you show was the first road name to sell out here. I thought it might be around for a while since it is a plain car.
I was very curious to see how this line would be received, especially since we have had Full Throttle cylindricals for years. Plus being long modern cars, they won't fit a number of era or smaller layouts. The next run of these is another interesting mix. I hope they do just as well as the first release.
I am just happy to see another big name get into Z scale. This is a great indicator that Z is on the right track and gaining in popularity.
Rob